Gemstone Mine
Land
This land enters with three mining counters on it.
, Remove a mining counter from this land: Add one mana of any color. If there are no mining counters on this land, sacrifice it.
Regrowth
Sorcery
Return target card from your graveyard to your hand.
Sol Ring
Artifact
: Add .
Mishra's Factory
Land
: Add .
: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
: Target Assembly-Worker creature gets +1/+1 until end of turn.