Acouirs eldrazi avenger

+4: put x 0/1 eldrazi spawn onto the battlefield where x are your eldrazi creaures
-5: give target creature an aura called die. die, give enchanted creature +10/+10 and annihilator 2
-20: turn all creatures opponents control to 0/1 eldrazi spawn and creatures you control to 12/12 annihilator 4 eldrazi creatures