Xenomorph King

Deathtouch, Menace, Vigilance
When Xenomorph King enters the
battlefield, target opponent chooses a
permanent they control at random and
sacrifices it. If a nonland permanent is
sacrificed this way, repeat this process.
Xenomorph King gains a +1/+1 and
protection from that permanent's color(s)
every time an opponent sacrifices a card this
way.