Midnight Pathlighter is a rare Creature — Human Wizard card from Forgotten Realms Commander (AFC), collector number 322. Current market price: $3.29, TCGplayer market prices via Scryfall.
Creatures you control can't be blocked except by legendary creatures. Whenever one or more creatures you control deal combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)