Number 6

Xenomorphs you control have protection
from Facehuggers. (They can't be blocked, targeted, or dealt damage by Facehuggers.)
At the beginning of your end step, target opponent creates a 1/1 Facehugger creature token with deathtouch.
Whenever a Facehugger dies, put a +3/+3 counter on each
Xenomorph you control.