Debt to the Damned

Debt to the Damned enters the battlefield with X Debt counters on it.
At the beginning of your upkeep create a number of 2/2 black Zombie creature tokens equal to the number of Debt counters on Debt to the Damned unless target opponent sacrifices a creature.
{3}, pay three life: Remove a Debt counter from Debt to the Damned. Any player may activate this ability.