Gaea's Necromancer

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
{t}, Remove X +1/+1 counters from a creature
you control: Return target creature card with converted mana cost X or less from a graveyard onto the battlefield under your control. That creature is a Zombie in addition to its other types and has evolve.