Wilvodyr, Living Abyss

Wilvodyr, costs X less to cast where X is the
number of creatures you control with different
names. When Wilvodyr enters the battlefield
return up to X cards from your graveyard to the
battlefield with total converted mana cost X or
less, they are Zombies in addition to their other
types.
{u}{b}{r}{g} Sacrifice another creature, deal
damage equal to it's converted mana cost to target creature or planeswalker.