Nantuko Husk

Sacrifice a creature: Nantuko Husk gets +2/+2 until end of turn.

Writhing Necromass

This spell costs {1} less to cast for each creature card in your graveyard.
Deathtouch

Return target creature to its owner's hand.

Return target creature card from your graveyard to your hand.

Deathtouch
Other Zombie creatures you control get +1/+1.
Whenever another Zombie you control dies, target opponent loses 1 life.

When Gravedigger enters, you may return target creature card from your graveyard to your hand.