Magganaar, Rot Gorger

Undergrowth - Magganaar, Rot Gorger enters
the battlefield with a number of +1/+1 counters
on it equal to the number of creature cards in
your graveyard.
Trample, Deathtouch
When Magganaar, Rot Gorger enters the battlefield, create a green legendary 2/2 spider creature token named Miniir, Hydra Pilot.
Discard a creature card: Put two +1/+1 counters
on Magganaar, Rot Gorger.