Gremlin Tamer is a uncommon Creature — Human Scout card from Duskmourn: House of Horror (DSK), collector number 215. Current market price: $0.22 (foil $0.30), TCGplayer market prices via Scryfall.
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, create a 1/1 red Gremlin creature token.