Swarming Goblins is a common Creature — Goblin card from Adventures in the Forgotten Realms (AFR), collector number 162. Current market price: $0.27 (foil $0.28), TCGplayer market prices via Scryfall.
When this creature enters, roll a d20. 1—9 | Create a 1/1 red Goblin creature token. 10—19 | Create two of those tokens. 20 | Create three of those tokens.