Possessed Tribesman

Haste, Lifelink
Anytime a creature you control is sacrificed, put
a Hunger counter on this card. For each Hunger counter, Possessed Tribesman gets +1/+1. If this
card has 3 or more Hunger counters on it
remove them and transform it into Wendigo,
Eternal Hunger.
{2}: Sacrifice a creature. When you do, you gain
3 life.