Gewet, The Embalmer

All creature cards in your graveyard have
Embalm. (Exile the creature from your graveyard,
you may create a token that's a copy of the creature
except its White, is a Zombie in addition to it's other
types, and has no mana cost. The Embalm cost is
equal to the creature's mana cost plus {1}{w})
Whenever a creature is embalmed, you may gain
1 life or put a +1/+1 counter on target creature.