Chained Brute 
Creature — Devil
This creature doesn't untap during your untap step.
, Sacrifice another creature: Untap this creature. Activate only during your turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL