Yuan-Ti Malison is a rare Creature — Snake Rogue card from Adventures in the Forgotten Realms Promos (PAFR), collector number 86s. Current market price: — (foil $0.99), TCGplayer market prices via Scryfall.
This creature can't be blocked as long as it's attacking alone. Whenever this creature deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)
All Adventures in the Forgotten Realms Promos cards and prices