Soul of the Golgari

Trample
Noncreature spells in your graveyard gain
Dredge X, where X is that spell's converted mana
cost plus 2.
Creatures in your graveyard gain Scavenge. The Scavenge cost is equal to that creature's mana
cost.
Creatures you control gain Undergrowth — This creature enters the battlefield with a +1/+1
counter on it for each creature card in your
graveyard.