Junkyard Genius

When Junkyard Genius 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.

"That oughta do it."