Tritana, Merfolk Heir

When Tritana, Merfolk Heir enters the battlefield, create X number of 1/1 Merfolk
Wizard creature tokens and put a +1/+1 counter
on each Merfolk creature you control.
{x}{x}{t} Create X number of 1/1 Merfolk Wizard tokens with haste and put a +1/+1 counter on
each. Sacrifice X number of creatures during the
next end step.