Altar Golem

Altar Golem

Artifact Creature - Golem | Power/Toughness: * / * (CMC 7)
Trample
Altar Golem's power and toughness are each equal to the number of creatures on the battlefield.
Altar Golem doesn't untap during your untap step.
Tap five untapped creatures you control: Untap Altar Golem.