Kraul Harpooner is a uncommon Creature — Insect Warrior card from The List (PLST), collector number GRN-136. Current market price: $0.14, TCGplayer market prices via Scryfall.
Reach Undergrowth — When this creature enters, choose up to one target creature you don't control with flying. This creature gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have this creature fight that creature.