Ulchre, The Plauges

Indestructible
As long as your devotion to black or green is less
than five, Ulchre isn't a creature.
Whenever a creature returns to the battlefield
from a players graveyard, create a number of 1/1
saproling creature tokens with infect equal to that
creatures converted mana cost
{2}{b}{g}: Sacrifice any number of creatures.
Opponents lose a life for each creature you
sacrifice.