Cthulhu, The Dead Dreamer

Mass insanity ensues, tap all creatures. Earthquakes deal 1 damage to all creatures other than Cthulhu, The Dead Dreamer. One creature of your choice on each team attacks the creature to it's right, if there are no creatures, sacrifice that creature. All vehicles exiled. Create 3 floating lands. all creatures under your control become 5/5 tentacled abominations. Cthulhu gains +1/+1 for each creature on the battlefield due to sudden worship. All enemy creatures gain -3/-3 because of floods. Rl'yeh rises, a