Valerio, Uktabi Prince

{t}: Each player creates a colorless artifact token
named Banana with "{t}, Sacrifice this
artifact: Add {r} or {g}. You gain 2 life."
Whenever an artifact an opponent controls
is put into a graveyard from
the battlefield, put a +1/+1 counter on each
creature you control that's an Ape or a Monkey.
Whenever Kibo attacks, defending
player sacrifices an artifact.