Underworld Breach + Diligent Excavator + Thassa's Oracle + Progenitor Mimic
How it works
- Cast the artifact creature from your hand by paying 0.
- Diligent Excavator and Progenitor Mimic trigger, causing you to mill four cards.
- The artifact creature enters the battlefield and dies as a state-based action due to having zero toughness.
- Cast the artifact creature from your graveyard for its escape cost by paying 0 and exiling any three cards from your graveyard, except Thassa's Oracle if it is in your graveyard.
- Repeat from step 2 until you have an empty library.
- If Thassa's Oracle is in your hand, cast it by paying .
- Otherwise, cast Thassa's Oracle from your graveyard for its escape cost by paying and exiling three cards from your graveyard.
- Thassa's Oracle enters the battlefield, causing you to win the game.
This clever loop transforms a zero-mana artifact creature—often Memnite or Ornithopter—into a relentless engine by leveraging Underworld Breach to cast it repeatedly from your graveyard. As the creature enters and dies over and over, Diligent Excavator turns each casting into a flurry of milling that feeds cards directly back into your graveyard as fuel for escape. Meanwhile, Progenitor Mimic sits idly by as a historic permanent, passively fueling the Excavator's triggers and acting as another historic spell just by being on the battlefield. Once your entire library has been successfully milled away, you cap off the combination by casting Thassa's Oracle—either normally or escaping it via Breach—to instantly claim victory through its devotion-based win condition.