Cthulhu, Master Of R'lyeh

Defender. This card enters the battlefield tapped.
You can play this card from your graveyard if R'lyeh,
Tomb of Cthulhu was exiled by its own effect.
{t}, Double all Insanity Counters on nonmythos
creatures on the field.
{t}, If a nonmythos creature anywhere on the field
has Insanity Counters on it equal to or greater than
their converted mana cost, deal damage to all players
equal to those creature's Power.