Wydel, Nazac Exemplar

Exhume {1}{w}{u}{b}
{x}{w}{u}{b}: Return target creature with converted mana cost X from a graveyard to the battlefield under your control. It is a zombie in addition to its other types and enters the battlefield with a -1/-1 counter on it.
Wydel, Nazac Exemplar gets +1/+1 for each zombie you control during combat.