Preston, the Vanisher + Delney, Streetwise Lookout + Sefris of the Hidden Ways + Altar of Dementia + Caves of Chaos Adventurer
Preston, the Vanisher
Delney, Streetwise Lookout
Sefris of the Hidden Ways
Altar of Dementia
Caves of Chaos Adventurer
Infinite artifact ETBInfinite artifact LTBInfinite artifact sacrifice triggersInfinite artifact tokensInfinite +1/+1 counters on creatures you controlInfinite creature ETBInfinite creature LTBInfinite Treasure tokensInfinite card drawInfinite colored manaInfinite creature tokensInfinite death triggersInfinite draw triggersInfinite millInfinite creature sacrifice triggersInfinite self-millNear-infinite lifelossPut all basic lands from your library into your handPut all creature cards from your library onto the battlefieldReturn most creature cards from your graveyard onto the battlefield
How it works
Complete a dungeon.
Sefris' second ability triggers twice due to Delney.
Resolve the first trigger, returning up to one other creature from your graveyard to the battlefield.
Resolve the second trigger, returning Caves of Chaos Adventurer from your graveyard onto the battlefield.
When Caves of Chaos Adventurer enters, it triggers once and Preston triggers twice due to Delney.
Holding priority, activate Altar of Dementia by sacrificing Caves of Chaos Adventurer.
Resolve a Preston trigger, creating a token copy of Caves of Chaos Adventurer that is a 0/1 Illusion.
When the Caves of Chaos Adventurer token enters, it triggers twice due to Delney.
Resolve the Caves of Chaos Adventurer token triggers, venturing into Undercity twice.
Resolve the second Preston trigger from step 5, creating a token copy of Caves of Chaos Adventurer that is a 0/1 Illusion.
Repeat steps 8 and 9 one additional time.
Resolve the Caves of Chaos Adventurer trigger from step 5, venturing into Undercity and completing Undercity.
Repeat from step 2.
This magnificent engine spins into motion once you have completed a dungeon, letting Sefris of the Hidden Ways leverage Delney, Streetwise Lookout's passive ability to double its dungeon-completion triggers and resurrect multiple creatures at once. By bringing back Caves of Chaos Adventurer, you flood the board with triggers that Preston, the Vanisher seizes to duplicate the Adventurer as tiny 0/1 Illusions, which in turn repeatedly dive back into the Undercity to complete it anew. Altar of Dementia acts as the vital sacrificial outlet that lets you feed the loop back into your graveyard, ensuring that Sefris can continuously pull the Adventurer out again to generate an endless cascade of dungeon progression, tokens, and mana.