Radiant Solar + Sefris of the Hidden Ways + White Plume Adventurer + All-Fates Stalker

Radiant Solar

Sefris of the Hidden Ways

White Plume Adventurer

All-Fates Stalker

How it works

1. Cast All-Fates Stalker by paying its mana cost.
2. When All-Fates Stalker enters, it and Radiant Solar trigger.
3. Resolve the All-Fates Stalker trigger, exiling White Plume Adventurer until All-Fates Stalker leaves the battlefield.
4. Resolve the Radiant Solar trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice All-Fates Stalker.
5. All-Fates Stalker leaves the battlefield, causing White Plume Adventurer to be returned to the battlefield from exile.
6. When White Plume Adventurer enters, it and Radiant Solar trigger.
7. Resolve the White Plume Adventurer trigger, venturing into the Cradle of the Death God room, creating a 4/4 legendary The Atropal creature token and completing Tomb of Annihilation.
8. If you control two or more The Atropal tokens, put all but one into your graveyard due to the legend rule.
9. Sefris' second ability triggers, returning All-Fates Stalker from your graveyard to the battlefield.
10. When All-Fates Stalker enters, it and Radiant Solar trigger.
11. Resolve the All-Fates Stalker trigger, exiling White Plume Adventurer until All-Fates Stalker leaves the battlefield.
12. Resolve the Radiant Solar trigger from step 10, venturing into Tomb of Annihilation and into the Trapped Entry room, causing each player to lose 1 life.
13. Resolve the Radiant Solar trigger from step 6, venturing into the Oubliette room, causing you to discard a card and then sacrifice All-Fates Stalker.
14. Repeat from step 5.

This brilliant loop turns dungeon exploration into an endless, self-sustaining engine by exploiting the temporary exile of White Plume Adventurer. When All-Fates Stalker enters the battlefield, it banishes White Plume Adventurer and triggers Radiant Solar to sacrifice the Stalker itself, neatly sending the Stalker straight to your graveyard while returning White Plume Adventurer to the battlefield. That new entry triggers Radiant Solar and Sefris of the Hidden Ways together, rapidly progressing through dungeons until Sefris completes the Tomb of Annihilation and uses her "Create Undead" ability to yank All-Fates Stalker right back out of the graveyard to restart the cycle.