Preston, the Vanisher + Delney, Streetwise Lookout + Sefris of the Hidden Ways + Phyrexian Altar + White Plume Adventurer

Preston, the Vanisher

Delney, Streetwise Lookout

Sefris of the Hidden Ways

Phyrexian Altar

White Plume Adventurer

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 White Plume Adventurer from your graveyard onto the battlefield.
5. When White Plume Adventurer enters, it triggers once and Preston triggers twice due to Delney.
6. Holding priority, activate Phyrexian Altar by sacrificing White Plume Adventurer.
7. Resolve a Preston trigger, creating a token copy of White Plume Adventurer that is a 0/1 Illusion.
8. When the White Plume Adventurer token enters, it triggers twice due to Delney.
9. Resolve the White Plume Adventurer token triggers, venturing into Undercity twice.
10. Resolve the second Preston trigger from step 5, creating a token copy of White Plume Adventurer that is a 0/1 Illusion.
11. Repeat steps 8 and 9 one additional time.
12. Resolve the White Plume Adventurer trigger from step 5, venturing into Undercity and completing Undercity.
13. Repeat from step 2.

This intricate loop turns the power of dungeon crawling into an overwhelming cascade of value. Sefris of the Hidden Ways anchors the engine by letting you recur creatures when completing dungeons, while White Plume Adventurer steps in to immediately take the initiative and plunge you deeper into Undercity. Thanks to Delney, Streetwise Lookout doubling the triggers of your low-power creatures, Sefris pulls back multiple threats at once—including White Plume Adventurer itself. Meanwhile, Preston, the Vanisher duplicates these uncast entries into a steady stream of 0/1 Illusion tokens, which can be fed into Phyrexian Altar along with your main creatures to generate infinite mana, sacrifices, and perpetual dungeon completions.