Eye of Cthulhu

+1: Create a 1/1 servant of Cthulhu with flying
-3: create a 0/0 eye of Cthulhu with flying his power and toughness is how many servant of Cthulhu are on the battle field
-7: create a emblem that creates 4/3 eye of Cthulhu phase 2 with trample and flying at the beginning of your upkeep