Junkyard Genius
From The List & Mystery Booster
When Junkyard Genius etners the battlefield, create a tapped Powerstone token. (It's an artifact with "
: Add 
. This mana can't be spent to cast a nonartifact spell."), Sacrifice another creature or artifact: Until end of turn, other creatures you control get +1/+0 and gain menace and haste.
Artist: Rémi Jacquot
When Junkyard Genius etners the battlefield, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell."), Sacrifice another creature or artifact: Until end of turn, other creatures you control get +1/+0 and gain menace and haste.
Artist: Rémi Jacquot
