Titanic Resurrection

All Titan creatures begin the game with 10 sleep counters on them and tapped. Titan creatures with sleep counters on them don't untap during their controllers untap step, can't attack or block, and can't activate abilities that aren't mana abilities. Whenever a Titan creature enters the battlefield, tap it and put 3 sleep counters on it.
{x}{x}, Sacrifice a creature: Remove {x} sleep counters from target Titan creature you control.