Prototype — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)Vigilance, : Put a +1/+1 counter on target Assembly-Worker you control.
Prototype — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)Vigilance, : Put a +1/+1 counter on target Assembly-Worker you control.
Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")
Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")
Prototype — 2/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)FlyingWhen Spotter Thopter enters, scry X, where X is its power.
Prototype — 2/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)FlyingWhen Spotter Thopter enters, scry X, where X is its power.
Whenever an artifact you control enters, look at the top card of your library. If it's a land card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard.
At the beginning of your end step, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell."): Draw a card and put a +1/+1 counter on Geology Enthusiast.
At the beginning of your end step, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell."): Draw a card and put a +1/+1 counter on Geology Enthusiast.
When Great Desert Prospector enters, create a tapped Powerstone token for each other creature you control. (They're artifacts with ": Add . This mana can't be spent to cast a nonartifact spell.")
When Great Desert Prospector enters, create a tapped Powerstone token for each other creature you control. (They're artifacts with ": Add . This mana can't be spent to cast a nonartifact spell.")