Lotus, Growing Predator

Each creature card in your graveyard has Linger.
The linger cost is equal to its mana value. (Exile
a creature card from your graveyard and pay its
mana value: Put a number of -1/-1 counters equal
to its power on target creature. Linger only as a
sorcery.)
Whenever a creature card is put into an
opponent's graveyard, you may exile it. If you do,
put a +1/+1 counter on Lotus, Growing
Predator.