Ragnarök

Hexproof
As Ragnarök enters the battlefield it receives 9
doom counters. Once per turn remove one doom counter from Ragnarök, when you do place
one card form your hand under Ragnarök. When Ragnarök has no more doom counters exile
Ragnarök, when you do you may cast any number
of cards that where under Ragnarök without
paying their mana cost. At the end of your
opponents' next turn the game is over.