Junkyard Genius {1}{B}{R}
Creature — Human Artificer
When this creature enters, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")
{1}{B}{R}, Sacrifice another creature or artifact: Until end of turn, other creatures you control get +1/+0 and gain menace and haste.
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Cards that do something similar expected a card that isn't here?
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"When this creature enters, create a tapped Powerstone token."
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"When this creature enters, create a tapped Powerstone token."