Hancock, Ghoulish Mayor [Fallout]

Description

Set:	Fallout
Type:	Legendary Creature — Zombie Mutant Advisor
Rarity:	Rare
Cost:	{2}{B}

Each other creature you control that's a Zombie or Mutant gets +X/+X, where X is the number of counters on Hancock, Ghoulish Mayor.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)