Sefris of the Hidden Ways + Radiant Solar + Sakashima of a Thousand Faces + Spark Double

Sefris of the Hidden Ways

Radiant Solar

Sakashima of a Thousand Faces

Spark Double

How it works

1. Put any nontoken creature onto the battlefield.
2. When the creature enters, Radiant Solar, Spark Double and Sakashima of a Thousand Faces 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 Spark Double trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice Radiant Solar.
5. Resolve the Sakashima of a Thousand Faces 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 brilliant loop relies on Sefris of the Hidden Ways as your engine, transforming routine dungeon exploration into a relentless resurrection machine. When you enter a dungeon, Radiant Solar helps push you through the rooms while also providing a convenient way to cycle itself into the graveyard if needed. To make the dungeon triggers cascade endlessly, Sakashima of a Thousand Faces and Spark Double enter as copies of Radiant Solar, multiplying every entry into a flood of room advancements. The legend rule is safely neutralized by Sakashima of a Thousand Faces, allowing multiple Atropal tokens to briefly hit the battlefield before the excess ones go to the graveyard—which triggers Sefris of the Hidden Ways to bring Radiant Solar right back for another round.