Undead Offering

Undead Offering enters the battlefield under the control of an opponent of your choice.
At the beginning of your upkeep, create a 2/2
black Zombie Drone creature token. Put a peace counter on that token. Then, Undead Offering's
owner gains life equal to half the number of
Zombies you control. (Round up.)
Creatures with peace counters on them can't
attack Undead Offering's owner.