Flamespawn Monstrosity

When Flamespawn Monstrosity enters that battlefield, draw {x} cards, lose {x} life and put {x}+{x} +1/+1 counters on it. Each opponent discards {x} cards and sacrifices {x} permanents.
Whenever another creature would be dealt damage by Flamespawn Monstrosity, instead put that many -1/-1 counters on that creature.
Trample, Menace