Kavu Aggressor is a common Creature — Kavu card from Invasion (INV), collector number 148. Current market price: $0.09 (foil $0.59), TCGplayer market prices via Scryfall.
Kicker {4} (You may pay an additional {4} as you cast this spell.) This creature can't block. If this creature was kicked, it enters with a +1/+1 counter on it.