Titanic Awakening

All Titan creatures begin the game with 5 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 a sleep counter on it.
{5}: Remove 1 sleep counter from target Titan creature you control.