Cthulhu, Ancient Ruler

When Cthulhu, Ancient Ruler enters the battlefield sacrifice it unless it has already died this game.

As long as Cthulhu, Ancient Ruler is in the graveyard you may cast Kraken, Leviathan, Octupus, and Serpant spells from your graveyard and those spells cost {5} less to cast.

"That is not dead which can eternal lie, And with strange aeons even death may die."