Goblin Morningstar is a uncommon Artifact — Equipment card from Adventures in the Forgotten Realms (AFR), collector number 145. Current market price: $0.29 (foil $0.35), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+0 and has trample. Equip {1}{R} When this Equipment enters, roll a d20. 1—9 | Create a 1/1 red Goblin creature token. 10—20 | Create a 1/1 red Goblin creature token, then attach this Equipment to it.