Like Orn before it, Drannith was reduced to a playground for Ikoria's monsters.

Drannith Ruins

{T}: Add {C}.
{2}, {T}: Put two +1/+1 counters on target non-Human creature that entered this turn.

With their ancient enemy vanquished, the angels of New Capenna turned their eyes to their former captors: demons.

Metropolis Reformer

Flying, vigilance
You have hexproof.
Whenever Metropolis Reformer is dealt damage, you gain that much life.

Nissa, Resurgent Animist

Each time the landfall ability resolves in a turn after the second time, you'll just add mana.

If you reveal your entire library and don't reveal an Elf or Elemental card, you'll put all revealed cards back in a random order. This uses the same physical action as shuffling, although it isn't technically a "shuffle."

Nissa's landfall ability isn't a mana ability, even though it causes you to add mana. It uses the stack and can be responded to.

Landfall — Whenever a land you control enters, add one mana of any color. Then if this is the second time this ability has resolved this turn, reveal cards from the top of your library until you reveal an Elf or Elemental card. Put that card into your hand and the rest on the bottom of your library in a random order.

Open the Way

The number of players in the game is checked only as you choose the value for X. Once you've cast Open the Way, players leaving the game in response to the spell won't affect the number of land cards you'll find.

X can't be greater than the number of players in the game.
Reveal cards from the top of your library until you reveal X land cards. Put those land cards onto the battlefield tapped and the rest on the bottom of your library in a random order.

The Phyrexian design had to go, but the materials could be put to good use.

Rebuild the City

Any enters-the-battlefield abilities of the copied land will trigger when the token enters the battlefield. Any "as [this land] enters the battlefield" or "[this land] enters the battlefield with" abilities of the copied land will also work.

Each of the tokens copy exactly what was printed on the original land and nothing else (unless that land is copying something else or is a token; see below). It doesn't copy whether that land is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its types, color, and so on. However, if the original land has an ability that says it enters the battlefield tapped, the copies will also enter tapped.

If the copied land is a token, the token that's created copies the original characteristics of that token as stated by the effect that created that token.

If the copied land is copying something else, then the token enters the battlefield as whatever that land copied.

Choose target land. Create three tokens that are copies of it, except they're 3/3 creatures in addition to their other types and they have vigilance and menace. (They're affected by summoning sickness.)

Tazri, Stalwart Survivor

The mana produced by the ability granted by Tazri's first ability may be spent only to activate an ability of a creature on the battlefield. It can't be spent to activate abilities of creature cards in other zones.

The other activated ability the creature must have can be any activated ability, including one that can't be activated at the moment, or even one that can't be activated while the creature is on the battlefield. For example, you could tap a creature with cycling and Tazri's ability for mana.

Each creature you control has "{T}: Add one mana of any of this creature's colors. Spend this mana only to activate an ability of a creature. Activate only if this creature has another activated ability."
{W}{U}{B}{R}{G}, {T}: Mill five cards. Put all creature cards with activated abilities that aren't mana abilities from among the milled cards into your hand.

The Kenriths' Royal Funeral

Any of the exiled cards that somehow leave exile will no longer count toward the discount offered by the last ability.

The last ability doesn't change the mana cost or mana value of any legendary spell you cast, only the total cost you pay.

When The Kenriths' Royal Funeral enters, exile up to two target legendary creature cards from your graveyard. You draw X cards and you lose X life, where X is the greatest mana value among cards exiled this way.
Legendary spells you cast cost {1} less to cast for each card exiled with The Kenriths' Royal Funeral.

For those who survived, being prepared for the next crisis became one of the greatest virtues.

Training Grounds

Training Grounds won't affect a cost that isn't the cost to activate a creature's activated ability. For example, it won't affect Flameblast Dragon's {X}{R} cost, since that's a cost paid when a triggered ability resolves, and it won't affect a kicker cost, since that's an additional cost to cast a spell. Activated ability costs appear before a colon (:) in a card's rules text, or, in the case of some keywords, before a colon in reminder text.

If an activated ability of a creature you control costs no generic mana to activate (for example, if it costs {R}{R}, it costs {0}, or it costs only nonmana actions such as {T} or "Sacrifice a creature"), Training Grounds simply won't affect it. In particular, it won't increase the cost to include a mana payment of {1}.

Training Grounds affects only creatures you control on the battlefield. The costs of activated abilities that work in other zones (such as cycling or unearth) won't be reduced.

Training Grounds can reduce the amount you pay for a creature's activated ability cost that includes {X}. For example, Drana, Kalastria Bloodchief has an activated ability that costs {X}{B}{B}. If you control Training Grounds and you activate the ability with X equal to 5, you'll have to pay only {3}{B}{B}. This is true even if the ability states that {X} must be paid with a certain color of mana, as Crimson Hellkite's ability does.

Training Grounds can reduce the part of an activation cost represented by generic mana symbols down to nothing, as long as it still costs at least one mana. For example, if an activation cost is {2}{G}, you'd have to pay only {G}. If an activation cost is {2}, though, you'd still have to pay {1}.

Training Grounds takes the total cost to activate a creature's activated ability into account, not just the cost printed on it. For example, Urabrask has an activated ability that costs {R}, and Suppression Field says "Activated abilities cost {2} more to activate unless they're mana abilities." Since activating Urabrask's activated ability would now cost {2}{R}, Training Grounds reduces that cost back to {R}.

Training Grounds won't affect the part of an activation cost represented by colored mana symbols or snow mana symbols. It also won't affect nonmana parts of an activation cost, if there are any.

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Card (8)	Type	^{$0.00 (0.00)} Price
Drannith Ruins	Land	$0.00 ^(0.00)
Metropolis Reformer	Creature	$0.00 ^(0.00)
Nissa, Resurgent Animist	Creature	$0.00 ^(0.00)
Open the Way	Sorcery	$0.00 ^(0.00)
Rebuild the City	Sorcery	$0.00 ^(0.00)
Tazri, Stalwart Survivor	Creature	$0.00 ^(0.00)
The Kenriths' Royal Funeral	Enchantment	$0.00 ^(0.00)
Training Grounds	Enchantment	$0.00 ^(0.00)

March of the Machine: The Aftermath Promos