Sefris of the Hidden Ways + Radiant Solar + Evil Twin + Stunt Double

Sefris of the Hidden Ways

Radiant Solar

Evil Twin

Stunt Double

How it works

1. Put any nontoken creature onto the battlefield.
2. When the creature enters, Radiant Solar, Stunt Double and Evil Twin each trigger.
3. Resolve the Radiant Solar trigger, causing you to venture into Tomb of Annihilation and into the Trapped Entry room, causing each player to lose 1 life.
4. Resolve the Stunt Double trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice Radiant Solar.
5. Resolve the Evil Twin trigger, venturing into the Cradle of the Death God room, creating a 4/4 legendary The Atropal creature token and completing Tomb of Annihilation.
6. If you control two or more The Atropal tokens, put all but one into your graveyard due to the legend rule.
7. Sefris' second ability triggers, returning Radiant Solar from your graveyard to the battlefield.
8. Repeat from step 2.

This intricate loop relies on Sefris of the Hidden Ways as your engine, transforming repetitive dungeon exploration into a recursive resurrection cycle. By having Stunt Double and Evil Twin enter the battlefield as copies of Radiant Solar, every single iteration triggers a massive wave of dungeon progression through Radiant Solar's enter-the-battlefield ability. This rapid advancement quickly forces you through Tomb of Annihilation to the Cradle of the Death God room, where the legendary status of the resulting The Atropal token triggers the legend rule to instantly send extra copies to the graveyard. That graveyard drop satisfies Sefris of the Hidden Ways's condition to trigger *Create Undead*, pulling Radiant Solar right back to the battlefield to restart the loop and achieve near-infinite death triggers, lifeloss, and creature sacrifices.