Midnight Pathlighter (AFC) from Forgotten Realms Commander, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: PINDURSKI
• Card Text:
  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.)