Elder God Cthulhu

Indestructible, flying, hexproof
Elder God Cthulhu cannot be countered
Insanity- Each player plays with his or her hand revealed. At the beginning of each upkeep, each player exiles three cards at random. If a player cannot, Elder God Cthulhu deals damage to that player equal to its power.
"Aegwrqgersafeadaf" - Last words of a witness to Cthulhu