Cannibal Cursebearer

Bestow {2}{c}
Cannibal Cursebearer and enchanted creature
each have "{2}{c}: Monstrosity 3."
At the beginning of your endstep, if Cannibal Cursebearer or enchanted creature is monstrous, sacrifice a creature and put three +1/+1 counters
on Cannibal Cursebearer or enchanted creature.