"The wind passing through the grooves makes a strange sort of music here."
—Pioneer journal of Big Ralph

Abraded Bluffs

Abraded Bluffs enters the battlefield tapped.
When Abraded Bluffs enters the battlefield, it deals 1 damage to target opponent.
{T}: Add {R} or {W}.

Desert is a land subtype with no special meaning. It doesn’t grant the land an intrinsic mana ability. Other cards may care about which lands are Deserts.

Local Purveyor Honest Rutstein Clarifies, Strengthens "No Refunds" Policy

Abrupt Decay

This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.

A spell or ability that counters spells can still target Abrupt Decay. When that spell or ability resolves, Abrupt Decay won't be countered, but any additional effects of the countering spell or ability will still happen.

If a permanent has {X} in its mana cost, X is considered to be 0.

The mana value of a token that isn't a copy of another object is 0. A token that is a copy of another object has the same mana cost as that object.

If you target a creature with ward, you may still pay the ward cost, but Abrupt Decay won't be countered even if you don't.

Automated systems at the Tolarian Academy sort new acquisitions for optimal use, determining which should be studied, eaten, or sold.

Academy Manufactor

If you would create a Clue, Food, or Treasure token, instead create one of each.

Creating a Clue token this way isn't the same thing as investigating. Notably, an ability that triggers whenever you investigate won't trigger because you created a Clue token due to this replacement effect. If the original token creation was because you investigated once, those abilities will still each trigger once, no matter how many Clue tokens you end up creating.

If you control eighteen Academy Manufactors (I don't know, you figure it out) and would create some number of Clue, Food, or Treasure tokens, you will instead create 129,140,163 times that many Clue tokens, 129,140,163 times that many Food tokens, and 129,140,163 times that many Treasure tokens.

If you control one Academy Manufactor and would create some number of Clue, Food, or Treasure tokens, you will instead create that many Clue tokens, that many Food tokens, and that many Treasure tokens.

If you control two Academy Manufactors and would create some number of Clue, Food, or Treasure tokens, you will instead create three times that many Clue tokens, three times that many Food tokens, and three times that many Treasure tokens.

Oriq agents stick to the dark corners of Arcavios, unseen yet ever-present.

Access Tunnel

{T}: Add {C}.
{3}, {T}: Target creature with power 3 or less can't be blocked this turn.

If the target creature's power is greater than 3 as Access Tunnel's second ability tries to resolve, the ability doesn't resolve. However, if instead the creature's power is raised above 3 after the ability resolves, it still can't be blocked that turn.

Once a creature with power 3 or less has been blocked, Access Tunnel's second ability won't cause it to become unblocked.

"I don't know what that is or who it belongs to, but it's shiny and I want it."

Aetherborn Marauder

Flying, lifelink
When Aetherborn Marauder enters the battlefield, move any number of +1/+1 counters from other permanents you control onto Aetherborn Marauder.

If a creature has been dealt damage, that damage remains marked on it until the cleanup step. If Aetherborn Marauder takes counters from a creature that has been dealt damage, that creature will be destroyed if the damage is now lethal.

You choose which counters to move as Aetherborn Marauder's triggered ability resolves.

You may choose to move zero +1/+1 counters.

You may move +1/+1 counters from any number of other permanents you control, not just from one.

Crackling with rage and stolen thunder, he drives the Hellspurs to ever-greater heights of violence.

Akul the Unrepentant

Flying, trample
Sacrifice three other creatures: You may put a creature card from your hand onto the battlefield. Activate only as a sorcery and only once each turn.

Albiorix, Goose Tyrant // Wild Goose Chase

Flying, Trample, Ward {1}
Whenever you sacrifice a token, Albiorix perpetually gets +1/+1. This ability also triggers if Albiorix is in exile.

Draw two cards, then discard two cards. Create a Food token.

Aloe Alchemist

Trample
When Aloe Alchemist becomes plotted, target creature gets +3/+2 and gains trample until end of turn.
Plot {1}{G} (You may pay {1}{G} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Exiling a card using its plot ability is a special action. Once you announce you’re taking that action, no other player can respond by trying to remove that card from your hand.

If a plotted card has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.

If you’re casting a plotted card from exile without paying its mana cost, you can’t choose to cast it for any other alternative costs. You can, however, pay additional costs, such as kicker costs. If the plotted card has any mandatory additional costs, those must still be paid to cast the spell.

Plot abilities are written “Plot [cost],” which means “Any time you have priority during your main phase while the stack is empty, you may pay [cost] and exile this card from your hand. It becomes plotted.”

You can’t cast a plotted card on the same turn it became plotted. On any future turn, you may cast that card from exile without paying its mana cost during your main phase while the stack is empty.

"First rule of crossing Blacksnag Bog: if you can't see the bottom, don't."
—Chance Mulligan, wilderness guide

Ambush Gigapede

Flash
When Ambush Gigapede enters the battlefield, target creature an opponent controls gets -2/-2 until end of turn.

"I reckon that thing's trying to put me out of a job!"
—Bristly Bill, cactusfolk gardener

Ancient Cornucopia

Whenever you cast a spell that's one or more colors, you may gain 1 life for each of that spell's colors. Do this only once each turn.
{T}: Add one mana of any color.

Ancient Cornucopia’s triggered ability counts the number of colors the spell has (from one to five), not how many colored mana symbols there are in its mana cost or how many colors of mana you spent.

Ancient Cornucopia’s triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered. If that spell is countered, use its last known information to determine what colors it was.

Once you choose to gain life using Ancient Cornucopia’s triggered ability, that ability won’t trigger again that turn.

When the ruins awakened, so did their defenses.

Ancient Greenwarden

Reach
You may play lands from your graveyard.
If a land entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

An ability that triggers whenever you play a land won't trigger an additional time.

Ancient Greenwarden allows you to play a modal double-faced card's land face, but not a nonland face.

Ancient Greenwarden doesn't allow you to activate abilities (such as cycling) of land cards in your graveyard.

Ancient Greenwarden doesn't change the times when you can play those lands. You can still play only one land per turn, and only during your main phase when you have priority and the stack is empty.

Ancient Greenwarden's effect doesn't copy the triggered ability; it causes the ability to trigger twice. Any choices made as you put the ability onto the stack, such as modes and targets, are made separately for each instance of the ability. Any choices made on resolution, such as whether to put counters on a permanent, are also made individually.

Ancient Greenwarden's third ability affects a land's own enters-the-battlefield triggered abilities as well as other triggered abilities that trigger when that land enters the battlefield, such as landfall abilities. Such triggered abilities start with "when" or "whenever."

If a land entering the battlefield at the same time as Ancient Greenwarden (including Ancient Greenwarden itself if an effect causes it to be a land) causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

If you control two Ancient Greenwardens, a land entering the battlefield causes abilities to trigger three times, not four. A third Ancient Greenwarden causes abilities to trigger four times, a fourth causes abilities to trigger five times, and so on.

Look at each permanent as it exists on the battlefield, taking into account continuous effects, to determine whether any triggered abilities will trigger multiple times. For example, if you control Ashaya, Soul of the Wild, a nontoken creature entering the battlefield will cause any appropriate abilities to trigger an additional time.

Replacement effects are unaffected by Ancient Greenwarden's third ability. This includes any abilities that apply "as [this land] enters the battlefield" and any ability that says the land enters the battlefield with counters.

The trigger event doesn't have to specifically refer to "lands." For example, an ability that triggers "whenever a creature enters the battlefield under your control" would trigger twice if the entering land is also a creature.

Angel of Indemnity

Flying, lifelink
When Angel of Indemnity enters the battlefield, return target permanent card with mana value 4 or less from your graveyard to the battlefield.
Encore {6}{W}{W} ({6}{W}{W}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

A permanent card is an artifact, battle, creature, enchantment, land, or planeswalker card.

Each token must attack the appropriate player if able.

Exiling the card with encore is a cost to activate the ability. Once you announce that you’re activating it, no player may take actions until you’ve finished. They can’t try to remove the card from your graveyard to stop you from paying the cost.

If an effect stops a token from attacking a specific player, that token can attack any player, planeswalker, or battle, or not attack at all. If the effect stops the token from attacking a specific player unless a cost is paid, you don’t have to pay that cost unless you want to attack that player.

If one of the tokens can’t attack for any reason (such as being tapped), then it doesn’t attack. If there’s a cost associated with having it attack, you aren’t forced to pay that cost, so it doesn’t have to attack in that case either.

If one of the tokens somehow is under another player’s control as the delayed triggered ability resolves, you can’t sacrifice that token. It remains on the battlefield indefinitely, even if you regain control of it later.

If the mana cost of a card in your graveyard includes {X}, X is 0 for the purpose of determining its mana value.

If you return an Aura this way, you choose what the Aura will enchant just before it enters the battlefield. An Aura returning to the battlefield this way doesn’t target the player or permanent it will enchant, so permanents or players with hexproof may be chosen; however, the chosen recipient must be able to legally be enchanted by the Aura, so a player or permanent with protection from one of the Aura’s qualities can’t be chosen this way. If there’s nothing legal for the Aura to enchant, it stays in the graveyard.

Opponents who have left the game aren’t counted when determining how many tokens to create.

The tokens copy only what’s on the original card. Effects that modified that creature when it was previously on the battlefield won’t be copied.

Flying, lifelink
When Angel of Indemnity enters the battlefield, return target permanent card with mana value 4 or less from your graveyard to the battlefield.
Encore {6}{W}{W}

Angel of the Ruins

Flying
When Angel of the Ruins enters the battlefield, exile up to two target artifacts and/or enchantments.
Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

Angelic Sell-Sword

Flying, vigilance
Whenever Angelic Sell-Sword or another nontoken creature enters the battlefield under your control, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
Whenever Angelic Sell-Sword attacks, if its power is 6 or greater, draw a card.

Captain Angrath cares less about treasure than mayhem. If he can't leave Ixalan, he'll burn the plane down.

Angrath's Marauders

If a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

If a creature with trample you control would deal combat damage to a blocking creature while you control Angrath's Marauders, you must assign its unmodified damage. For example, a 3/3 creature with trample blocked by a 2/2 creature can have at most 1 damage assigned to the defending player. It will then deal 4 damage to the blocking creature and 2 damage to the defending player.

If an effect such as that of Chandra's Pyrohelix asks you to divide damage among targets, you must divide the unmodified damage before doubling it.

If you control a second Angrath's Marauders, damage dealt by sources you control will be multiplied by 4. If you control a third, it will be multiplied by 8, and so on.

Somber Day in Omenport as Another Hero Laid to Rest

Anguished Unmaking

Exile target nonland permanent. You lose 3 life.

If the nonland permanent becomes an illegal target, Anguished Unmaking doesn't resolve. You won't lose 3 life.

"Little tip, newcomer. Give your boots a shake in the morning before you put them on."
—Annie Flash, to Kellan

Ankle Biter

Annie Flash, the Veteran

Flash
When Annie Flash, the Veteran enters the battlefield, if you cast it, return target permanent card with mana value 3 or less from your graveyard to the battlefield tapped.
Whenever Annie Flash becomes tapped, exile the top two cards of your library. You may play those cards this turn.

Annie Flash’s second ability triggers if you cast it from any zone. It doesn’t trigger if you put Annie Flash onto the battlefield without casting it.

If you return an Aura this way, you choose what the Aura will enchant just before it enters the battlefield. An Aura returning to the battlefield this way doesn’t target the player or permanent it will enchant, so players or permanents with hexproof may be chosen; however, the chosen recipient must be able to legally be enchanted by the Aura, so a player or permanent with protection from one of the Aura’s qualities can’t be chosen this way. If there’s nothing legal for the Aura to enchant, it stays in the graveyard.

You pay all costs and follow all normal timing rules for cards played from exile with Annie Flash’s last ability. For example, if the exiled card is a land card, you may play it only during your main phase while the stack is empty.

One last job, then she could retire in peace.

Annie Joins Up

When Annie Joins Up enters the battlefield, it deals 5 damage to target creature or planeswalker an opponent controls.
If a triggered ability of a legendary creature you control triggers, that ability triggers an additional time.

Abilities that apply “as [this creature] enters the battlefield” or “as [this creature] is turned face up” are also unaffected.

Abilities that apply “when [this creature] is turned face up” will trigger an additional time only if that creature is legendary once it has been turned face up.

Annie Joins Up’s last ability doesn’t copy the triggered ability; it just causes the ability to trigger an additional time. Any choices made as you put the ability onto the stack, such as modes and targets, are made separately for each instance of the ability. Any choices made on resolution, such as whether to put counters on a permanent, are also made individually.

If a triggered ability is linked to a second ability, additional instances of that triggered ability are also linked to that second ability. If the second ability refers to “the exiled card,” it refers to all cards exiled by instances of the triggered ability.

In some cases involving linked abilities, an ability requires information about “the exiled card.” When this happens, the ability gets multiple answers. If these answers are being used to determine the value of a variable, the sum is used. For example, if Elite Arcanist’s enters-the-battlefield ability triggers twice, two cards are exiled. The value of X in the activation cost of Elite Arcanist’s other ability is the sum of the two cards’ mana values. As the ability resolves, you create copies of both cards and can cast none, one, or both of the copies in any order.

Once an ability of a creature you control has triggered, making it legendary won’t cause that ability to trigger an additional time. Similarly, once an ability of a legendary creature you control has triggered an additional time due to Annie Joins Up’s last ability, turning it into a nonlegendary creature won’t remove that additional triggered ability from the stack.

Replacement effects are unaffected by Annie Joins Up’s last ability. For example, a 1/1 creature that enters the battlefield under your control with one +1/+1 counter on it won’t receive an additional +1/+1 counter.

Triggered abilities use the word “when,” “whenever,” or “at.” They’re often written as “[Trigger condition], [effect].” Some keyword abilities are triggered abilities and will have “when,” “whenever,” or “at the beginning of” in their reminder text.

Weary travelers trade stories of the Eversaloon, an extraplanar respite that appears at the moment it is most needed.

Another Round

Exile any number of creatures you control, then return them to the battlefield under their owner's control. Then repeat this process X more times.

Abilities that trigger “When [this creature] enters the battlefield” or “When [this creature] leaves the battlefield” will trigger each time that creature enters or leaves the battlefield as a result of Another Round’s effect. If those abilities require targets, you won’t choose those targets until after Another Round finishes resolving, when those abilities are put onto the stack.

All abilities that trigger while Another Round is resolving are put on the stack after Another Round is finished resolving. All such abilities controlled by the player whose turn it is are put on the stack first, then those controlled by the next player in turn order, and so on. For each player, they can put their abilities on the stack in the order of their choice. Abilities don’t have to be put on the stack in the order in which they triggered.

If X is 0, you’ll perform the process just once when Another Round resolves.

If a token is exiled this way, it will cease to exist and won’t return to the battlefield.

Once an exiled creature returns, it’s considered a new object with no relation to the object that it was. Auras attached to the exiled creature will be put into their owners’ graveyards. Equipment attached to the exiled creature will become unattached and remain on the battlefield. Any counters on the exiled creature will cease to exist.

You don’t have to choose the same set of creatures each time you repeat this process.

Arcane Bombardment

Whenever you cast your first instant or sorcery spell each turn, exile an instant or sorcery card at random from your graveyard. Then copy each card exiled with Arcane Bombardment. You may cast any number of the copies without paying their mana costs.

If Arcane Bombardment leaves the battlefield, the exiled cards remain in exile. If it returns to the battlefield or you play another copy of it, you won't get to cast copies of the cards previously exiled.

If you cast a spell with {X} in its cost without paying its mana cost, you must choose 0 for X.

If you've already cast an instant or sorcery spell the turn that Arcane Bombardment enters the battlefield, it won't trigger until you cast an instant or sorcery spell on a later turn.

The spell that caused Arcane Bombardment's ability to trigger is normally still on the stack while that ability resolves. That spell won't be among the cards in your graveyard when you exile an instant or sorcery from it at random.

You cast the desired copies as the triggered ability resolves. You don't get to cast them later in the turn. You choose the order of copies as you cast them.

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

The controller of the countered spell doesn't choose how many cards to draw until the relevant ability resolves. The player may draw 0, 1, or 2 cards. They choose the number before drawing any cards.

Arcane Heist

You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

If a creature with an encoded card deals combat damage to more than one player simultaneously (perhaps because some of the combat damage was redirected), the triggered ability will trigger once for each player it deals combat damage to. Each ability will create a copy of the exiled card and allow you to cast it.

If another player gains control of the creature, that player will control the triggered ability. That player will create a copy of the encoded card and may cast it.

If the creature leaves the battlefield, the exiled card will no longer be encoded on any creature. It will stay exiled.

If the spell with cipher doesn’t resolve, none of its effects will happen, including cipher. The card will go to its owner’s graveyard and won’t be encoded on a creature.

If the spell you cast has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.

If you cast a spell “without paying its mana cost,” you can’t choose to cast it for any alternative costs. You can, however, pay additional costs, such as kicker costs. If the spell has any mandatory additional costs, those must be paid to cast the spell.

If you choose not to cast the copy, or you can’t cast it (perhaps because there are no legal targets available), the copy will cease to exist the next time state-based actions are performed. You won’t get a chance to cast the copy at a later time.

The copy of the card with cipher is created in and cast from exile.

The exiled card with cipher grants a triggered ability to the creature it’s encoded on. If that creature loses that ability and subsequently deals combat damage to a player, the triggered ability won’t trigger. However, the exiled card will continue to be encoded on that creature.

The spell with cipher is encoded on the creature as part of that spell’s resolution, just after the spell’s other effects. That card goes directly from the stack to exile. It never goes to the graveyard.

You can choose only a creature to encode the card onto.

You cast the copy of the card with cipher during the resolution of the triggered ability. Ignore timing restrictions based on the card’s type.

You choose the creature as the spell resolves. The cipher ability doesn’t target that creature.

You choose whether to cast the target instant or sorcery card as Arcane Heist resolves. If you do, you do so as part of the resolution of Arcane Heist. You can’t wait to cast it later in the turn. Timing restrictions based on the card’s types are ignored.

You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead.
Cipher

It started as a mere drop of water. The Magic Mirror crystallized it into much more.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

If you don't have a commander, Arcane Signet's ability produces no mana.

If you have two commanders, the ability adds one mana of any color in their combined color identities.

If your commander is a card that has no colors in its color identity, Arcane Signet's ability produces no mana. It doesn't produce {C}.

Archangel of Tithes

Flying
As long as Archangel of Tithes is untapped, creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.
As long as Archangel of Tithes is attacking, creatures can't block unless their controller pays {1} for each of those creatures.

If you control an untapped Archangel of Tithes, your opponents can choose to not attack with a creature that must attack if able. The same is true with respect to an attacking Archangel of Tithes and a creature that must block if able.

Heist Shocker! Supposedly Invincible Vault Vinced!

Archive Trap

If an opponent searched their library this turn, you may pay {0} rather than pay this spell's mana cost.
Target opponent mills thirteen cards.

A spell or ability causes a player to search their library only if it specifically contains the word “search” in its text. For example, if a spell or ability lets a player look at the top four cards of their library and do something with one of those cards, that’s not a search.

Archive Trap checks only whether an opponent searched their library. It doesn’t matter whether that player found a card during the search.

Casting a Trap by paying its alternative cost doesn’t change its mana cost or mana value. The only difference is the cost you actually pay.

Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.

If a search effect is affected by Aven Mindcensor’s ability (which causes a player to search the top four cards of their library instead), that still counts as searching that library.

If the targeted opponent has fewer than thirteen cards in their library, that player puts their entire library into their graveyard.

The opponent you target doesn’t have to be the opponent who searched their library.

You may ignore a Trap’s alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met.

Some emeritus professors return from their wanderings periodically to share tales of the mystical wonders of Arcavios.

Archmage Emeritus

Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card.

 Each magecraft ability has a different effect, although they all have the same trigger condition, whenever you cast or copy an instant or sorcery spell.

 For example, if you control Archmage Emeritus and cast an instant or sorcery spell, Archmage Emeritus's magecraft ability will trigger and you will draw a card.

 If an effect creates a copy of an instant or sorcery spell, this will also cause the magecraft ability to trigger.

 If an effect creates multiple copies of an instant or sorcery spell, magecraft abilities trigger once for each copy created by the effect.

 Some effects instruct you to copy an instant or sorcery card in a zone other than the stack. These copies do not cause magecraft abilities to trigger. However, most effects that do this also allow you to cast the copy, and casting the copy will cause magecraft abilities to trigger.

Archmage's Charm

Choose one —
• Counter target spell.
• Target player draws two cards.
• Gain control of target nonland permanent with mana value 1 or less.

If a creature on the battlefield has {X} in its mana cost, X is considered to be 0.

Archmage's Newt

Whenever Archmage's Newt deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback {0} until end of turn instead if Archmage's Newt is saddled. (You may cast that card from your graveyard for its flashback cost. Then exile it.)
Saddle 3

Whenever Archmage's Newt deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback {0} until end of turn instead if Archmage's Newt is saddled.
Saddle 3

Arid Archway

Arid Archway enters the battlefield tapped.
When Arid Archway enters the battlefield, return a land you control to its owner's hand. If another Desert was returned this way, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
{T}: Add {C}{C}.

Arid Archway will return itself to its owner’s hand if you control no other lands when its enters-the-battlefield ability resolves (or if you choose to return it to its owner’s hand despite controlling other lands). It’s almost never a good idea to play it on your first turn.

"I always wanted to ride a slow cannonball with legs!"
—Kellan

Armored Armadillo

Ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)
{3}{W}: Armored Armadillo gets +X/+0 until end of turn, where X is its toughness.

The value of X is determined as Armored Armadillo’s activated ability resolves. It won’t change later in the turn if other effects modify Armored Armadillo’s toughness.

Assimilation Aegis

When Assimilation Aegis enters the battlefield, exile up to one target creature until Assimilation Aegis leaves the battlefield.
Whenever Assimilation Aegis becomes attached to a creature, for as long as Assimilation Aegis remains attached to it, that creature becomes a copy of a creature card exiled with Assimilation Aegis.
Equip {2}

Any non-copy effects that applied to the creature Assimilation Aegis is attached to before it becomes a copy of another card will continue to apply once it becomes a copy. The same is true of any counters that are on that creature.

If Assimilation Aegis leaves the battlefield before its first ability resolves, the target creature won’t be exiled at all.

If there are no creature cards exiled with Assimilation Aegis when its second ability resolves, the creature Assimilation Aegis is attached to won’t become a copy of anything else. It will remain just as it was.

If you somehow exile a noncreature card with Assimilation Aegis’s first ability (possibly because it was a copy of a creature while on the battlefield), you can’t choose to have the creature Assimilation Aegis is attached to become a copy of that card when Assimilation Aegis’s second ability resolves.

If you somehow exile multiple creature cards with the same Assimilation Aegis (probably because its first ability was copied or something caused it to trigger more than once), you choose one of the exiled creature cards each time its second triggered ability resolves. You don’t have to choose the same one each time.

When Assimilation Aegis’s second ability resolves, the creature Assimilation Aegis is attached to copies exactly what was printed on the original creature card and nothing else. It doesn’t copy any information about the object the card was before it was exiled.

When the creature Assimilation Aegis is attached to becomes a copy of an exiled creature card, it’s neither entering nor leaving the battlefield. Any enters-the-battlefield or leaves-the-battlefield abilities won’t trigger.

At Knifepoint

As long as it's your turn, outlaws you control have first strike. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)
Whenever you commit a crime, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery." This ability triggers only once each turn.

A card, spell, or permanent is an outlaw if it has the Assassin, Mercenary, Pirate, Rogue, or Warlock creature type. It doesn’t matter if it has more than one of those creature types; as long as it has at least one, it’s an outlaw.

A player can commit only one crime per spell or ability they control. Targeting multiple opponents, permanents, spells, abilities, and/or cards with the same spell or ability doesn’t constitute committing multiple crimes.

Card (374)	Type	^{$271.96 (999.60)} Price
Abraded Bluffs	Land	$0.02 ^(0.04)
Akul the Unrepentant	Creature	$0.08 ^(0.16)
Akul the Unrepentant - extendedart	Creature	$0.08 ^(0.23)
Aloe Alchemist	Creature	$0.00 ^(0.00)
Ambush Gigapede	Creature	$0.00 ^(0.00)
Ankle Biter	Creature	$0.00 ^(0.00)
Annie Flash, the Veteran	Creature	$0.00 ^(0.00)
Annie Flash, the Veteran - borderless - showcase	Creature	$0.00 ^(0.50)
Annie Joins Up	Enchantment	$2.50 ^(11.00)
Annie Joins Up - extendedart	Enchantment	$3.00 ^(6.00)
Another Round	Sorcery	$0.00 ^(0.00)
Another Round - extendedart	Sorcery	$0.15 ^(0.30)
Archangel of Tithes	Creature	$0.00 ^(0.00)
Archangel of Tithes - extendedart	Creature	$2.00 ^(5.00)
Archmage's Newt	Creature	$0.00 ^(0.00)
Archmage's Newt - extendedart	Creature	$0.08 ^(0.08)
Arid Archway	Land	$0.05 ^(0.20)
Armored Armadillo	Creature	$0.00 ^(0.00)
Assimilation Aegis	Artifact	$0.50 ^(2.50)
Assimilation Aegis - extendedart	Artifact	$1.50 ^(4.00)
At Knifepoint	Enchantment	$0.00 ^(0.00)
Aven Interrupter	Creature	$0.00 ^(0.00)
Aven Interrupter - extendedart	Creature	$2.50 ^(8.00)
Badlands Revival	Sorcery	$0.00 ^(0.00)
Bandit's Haul	Artifact	$0.00 ^(0.00)
Baron Bertram Graywater	Creature	$0.00 ^(0.00)
Beastbond Outcaster	Creature	$0.00 ^(0.00)
Betrayal at the Vault	Instant	$0.00 ^(0.00)
Binding Negotiation	Sorcery	$0.00 ^(0.00)
Blacksnag Buzzard	Creature	$0.00 ^(0.00)
Blood Hustler	Creature	$0.00 ^(0.00)
Blooming Marsh	Land	$0.75 ^(3.00)
Blooming Marsh - borderless	Land	$2.00 ^(4.00)
Boneyard Desecrator	Creature	$0.00 ^(0.00)
Bonny Pall, Clearcutter	Creature	$0.08 ^(0.61)
Bonny Pall, Clearcutter - extendedart	Creature	$0.50 ^(1.25)
Boom Box	Artifact	$0.00 ^(0.00)
Botanical Sanctum	Land	$0.50 ^(2.50)
Botanical Sanctum - borderless	Land	$1.50 ^(3.50)
Bounding Felidar	Creature	$0.00 ^(0.00)
Bovine Intervention	Instant	$0.00 ^(0.00)
Breeches, the Blastmaker	Creature	$0.00 ^(0.00)
Breeches, the Blastmaker - borderless - showcase	Creature	$0.00 ^(0.15)
Bridled Bighorn	Creature	$0.00 ^(0.00)
Brimstone Roundup	Enchantment	$0.00 ^(0.00)
Bristlepack Sentry	Creature	$0.00 ^(0.00)
Bristling Backwoods	Land	$0.02 ^(0.02)
Bristly Bill, Spine Sower	Creature	$21.00 ^(105.00)
Bristly Bill, Spine Sower - extendedart	Creature	$27.00 ^(60.00)
Bruse Tarl, Roving Rancher	Creature	$0.00 ^(0.00)

Outlaws of Thunder Junction