Naevys, Voracious Eater

Trample, Vigilance Wither (This deals damage to creatures in the form of -1/-1 counters.) Devour Food 3 (As this creature enters, you may sacrifice any number of Foods. It enters with three times that many +1/+1 counters on it.) {T}, Sacrifice X foods: Put X +1/+1 counters on Naevys and you gain 5 life.