Irrilask, Beloved Pet

Mutate {g}{b}{w/u}{w/u}
Sacrifice a food: Choose a kind of counter
from among flying, first strike, deathtouch,
hexproof, lifelink, menace, reach, trample,
vigilance, and +1/+1. Put a counter of that
kind on Irrilask, Beloved Pet.
Partner with Sweeney, Wild Caretaker