Havoc Eater is a rare Creature — Elemental card from Murders at Karlov Manor Commander (MKC), collector number 341. Current market price: $2.03, TCGplayer market prices via Scryfall.
Flying When this creature enters, for each opponent, goad up to one target creature that opponent controls. Put X +1/+1 counters on this creature, where X is the total power of creatures goaded this way.