Judas, World Eater

Unknown
When Judas enters the battlefield, exile all
creatures. Judas's power and toughness are each
equal to the combined power of creatures exiled
this way. When Judas leaves play, return all
creatures exiled with him to the battlefield.
At the beginning of each players upkeep, that
player gains control of Judas and it gains haste.
Pay 10 Life: Tap or Untap Judas. (Any player
may activate this ability at any time.)