Nadaar, Selfless Paladin [Dungeons & Dragons: Adventures in the Forgotten Realms]

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Type: Legendary Creature — Dragon Knight Rarity: Rare Cost: {2}{W} VigilanceWhenever Nadaar, Selfless Paladin enters the battlefield or attacks, venture into the dungeon. (Enter the first room or advance to the next room.)Other creatures you control get +1/+1 as long as you've completed a dungeon.