Goblin(1/1) // Dungeon of the Mad Mage

Yawning Portal — You gain 1 life. -> Dungeon Level

Dungeon Level — Scry 1. -> Goblin Bazaar or Twisted Caverns

Goblin Bazaar — Create a Treasure token. -> Lost Level

Twisted Caverns — Target creature can't attack until your next turn. -> Lost Level

Lost Level — Scry 2. -> Runestone Caverns or Muiral's Graveyard

Runestone Caverns — Exile the top two cards of your library. You may play them. -> Deep Mines

Muiral's Graveyard — Create two 1/1 black Skeleton creature tokens. -> Deep Mines

Deep Mines — Scry 3. -> 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.