Rulik Mons, Warren Chief is a uncommon Legendary Creature — Goblin card from Dominaria United (DMU), collector number 316. Current market price: $0.20 (foil $0.19), TCGplayer market prices via Scryfall.
Menace (This creature can't be blocked except by two or more creatures.) Whenever Rulik Mons attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you didn't put a card onto the battlefield this way, create a 1/1 red Goblin creature token.