Redcap Gutter-Dweller is a rare Creature — Goblin Warrior card from Wilds of Eldraine Promos (PWOE), collector number 146p. Current market price: $0.21 (foil $0.60), TCGplayer market prices via Scryfall.
Menace When this creature enters, create two 1/1 black Rat creature tokens with "This token can't block." At the beginning of your upkeep, you may sacrifice another creature. If you do, put a +1/+1 counter on this creature and exile the top card of your library. You may play that card this turn.