Sefris of the Hidden Ways + Radiant Solar + Sakashima of a Thousand Faces + Clever Impersonator

Sefris of the Hidden Ways

Radiant Solar

Sakashima of a Thousand Faces

Clever Impersonator

How it works

1. Put any nontoken creature onto the battlefield.
2. When the creature enters, Radiant Solar, Clever Impersonator 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 Clever Impersonator 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 loop transforms a simple creature entering the battlefield into an unstoppable engine by leveraging the legend rule alongside a cascade of dungeon triggers. With Sefris of the Hidden Ways on the board keeping watch, the arrival of a new creature sparks a flurry of exploration: Radiant Solar, Clever Impersonator copying the Solar, and Sakashima of a Thousand Faces copying the Impersonator all trigger simultaneously. As you race through the Tomb of Annihilation, Clever Impersonator forces a sacrifice of Radiant Solar into the graveyard, only for Sefris's *Create Undead* ability to immediately resurrect it. Sakashima of a Thousand Faces manages the legend rule so you can churn out duplicate The Atropal tokens endlessly, looping the entire cycle and burying your opponents in infinite life loss and triggers.