Necriti,Flesh-Consuming

Colored creatures in your graveyard have scavenge, scavange cost is equal to its mana cost
Scavenge costs that target Necriti cost {2} less
When Necriti dies, create X 1/1 black green insect creature tokens with "sacrifice: add 1 mana of any color, spend only to cast Necriti or pay scavenge costs that target Necriti." Equal to the number of +1/+1 counters on Necriti