Soul's Quarry

Whenever a creature you control dies, put a
number of +1/+1 counters on creatures you
control equal to the number of your creatures
that have died this turn. Then, if at least three
+1/+1 counters were distributed this way, proliferate.
Dead creatures are not useless creatures. Wights,
carrion, death shaman, and plague doctors all find
great use in corpses. Only half of those uses, however,
involve making a meal out of the corpse.