Gluttony, Sin of Insatiability

Other creatures are Food artifacts in addition to
their other types and have "{2},{t},Sacrifice this
artifact: You gain 3 life."
Whenever a creature enters the battlefield under
an opponent's control, place your choice of a
+1/+1, flying, lifelink, or ward {1} counter on it.
Whenever a Food leaves the battlefield, move all
counters that were on that Food onto Gluttony,
Sin of Insatiability.