The Gaping Dragon

Menace, lifelink.

Megamorph {5}{b}(You may cast this card face down
as a 3/3 creature for {3}, Turn it face up at any time
for its megamorph cost and put a +1/+1 counter on it.)

When The Gaping Dragon is turned face up, put
three -1/-1 counters on up to three other creatures.
"Dragon's become monstrous in their adaptation, subsisting on filth and muck in their desperation for survival." -First Firekeeper