Cxaxukluth, Eater of Gods

{t} sacrifice x creatures: put x +1/+1 counters on Cxaxukluth
{x}{x}{x}{x}{g}{r}{b}{t} Remove {x} +1/+1 counters
from Cxaxukluth: create x 3/3 black nightmare
horror creature tokens
Foul offspring of the Unnamable, great cannibal of
Gods! Cxaxukluth!