Cryostasis

Cumulative Upkeep: Exile the top 2 cards of your library.
You can't cast spells, draw cards, discard cards, or activate abilities of other nonland permanents you control. Creatures you control can't attack or block. Prevent all damage that would be dealt to you. You and other permanents you control have shroud.
{3}{u}{u}{u}: Sacrifice Cryostasis