Preston, the Vanisher + Delney, Streetwise Lookout + Sefris of the Hidden Ways + Veteran Dungeoneer

Preston, the Vanisher

Delney, Streetwise Lookout

Sefris of the Hidden Ways

Veteran Dungeoneer

How it works

1. Complete a dungeon.
2. Sefris' second ability triggers twice due to Delney.
3. Resolve the first trigger, returning up to one other creature from your graveyard to the battlefield.
4. Resolve the second trigger, returning Veteran Dungeoneer from your graveyard onto the battlefield.
5. When Veteran Dungeoneer enters, it triggers once and Preston triggers twice due to Delney.
6. Resolve a Preston trigger, creating a token copy of Veteran Dungeoneer that is a 0/1 Illusion.
7. When the Veteran Dungeoneer token enters, it triggers twice due to Delney.
8. Resolve the first Veteran Dungeoneer token trigger, venturing into Tomb of Annihilation and into the Trapped Entry room, causing each player to lose 1 life.
9. Resolve the second Veteran Dungeoneer token trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice the nontoken Veteran Dungeoneer.
10. Resolve the second Preston trigger from step 5, creating a token copy of Veteran Dungeoneer that is a 0/1 Illusion.
11. When the Veteran Dungeoneer token enters, it triggers twice due to Delney.
12. Resolve the first Veteran Dungeoneer token trigger, venturing into the Cradle of the Death God room, creating a 4/4 legendary The Atropal creature token and completing Tomb of Annihilation.
13. If you control two or more The Atropal tokens, put all but one into your graveyard due to the legend rule.
14. Repeat from step 2.

This fascinating loop turns dungeon exploration into an engine of relentless recursive value, supercharged by Delney, Streetwise Lookout doubling up every relevant low-power trigger on the board. Once you've completed a dungeon to get the ball rolling, Sefris of the Hidden Ways brings back key threats like Veteran Dungeoneer—whose entry triggers let you rapidly dive deeper into the Tomb of Annihilation. Meanwhile, Preston, the Vanisher watches all these uncast creatures arrive and immediately populates your battlefield with 0/1 Illusion copies, feeding your sacrifice outlets while relentlessly churning out dungeon completions and Atropal tokens.