Xenomorph Egg

This card enters the battlefield with three emergence counters.
During your upkeep, remove an emergence counter, then if there are none left, create a 1/1 Facehugger creature token (When this creature enters the battlefield, place two emergence counters on it, then X target creatures, where X is the number of Xenomorphs you control, get -1/-1. During your upkeep, remove an emergence counter, then if there are none left, create a 3/2 Xenomorph Drone creature token.)