Wandering Troubadour

放浪する吟遊詩人 (Wandering Troubadour) (ja)

Creature - Dragon Bard | Power/Toughness: 4 / 2 (CMC 4)
At the beginning of your end step, if you had a land enter the battlefield under your control this turn, venture into the dungeon. (Enter the first room or advance to the next room.)