Gemstone Mine

If the last mining counter is removed from Gemstone Mine in some way other than activating its ability, Gemstone Mine won’t be sacrificed (and its ability can’t be activated).

Gemstone Mine enters the battlefield with three mining counters on it.
{T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.

Mishra's Factory

A noncreature permanent that becomes a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature. Notably, if you turn Mishra's Factory into a creature on the turn it entered the battlefield, you won't be able to then activate its first or last abilities.

After it becomes a creature, Mishra's Factory will still have all its abilities.

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Card (4)	Type	^{$0.00 (0.00)} Price
Gemstone Mine - 2003	Land	$0.00 ^(0.00)
Mishra's Factory - 2003	Land	$0.00 ^(0.00)
Regrowth - 2003	Sorcery	$0.00 ^(0.00)
Sol Ring - 2003	Artifact	$0.00 ^(0.00)

Judge Gift Cards 2005