Gaspard, Breaker of Wills

When Gaspard, Breaker of Wills enters the battlefield create X white 1/1 token creatures,
where X is the number of colorless tapped
creatures you control. These tokens enter the battlefield tapped.
{t}Sacrifice a tapped creature: Exile Gaspard,
Breaker of Wills. If you do, return Gaspard,
Breaker of Wills under its owner's control during
the next end step.