Yawning Portal — You gain 1 life. (to Dungeon Level)
Dungeon Level — Scry 1. (to Goblin Bazaar or Twisted Caverns)
Goblin Bazaar — Create a Treasure token. (to Lost Level)
Twisted Caverns — Target creature can’t attack until your next turn. (to Lost Level)
Lost Level — Scry 2. (to Runestone Caverns or Muiral’s Graveyard)
Runestone Caverns — Exile the top two cards of your library. You may play them. (to Deep Mines)
Muiral’s Graveyard — Create two 1/1 black Skeleton creature tokens. (to Deep Mines)
Deep Mines — Scry 3. (to Mad Wizard’s Lair)
Mad Wizard’s Lair — Draw three cards and reveal them. You may cast one of them without paying its mana cost.