Preston, the Vanisher + Delney, Streetwise Lookout + Sefris of the Hidden Ways + Tomb of Horrors Adventurer + Phantom Train
Preston, the Vanisher
Delney, Streetwise Lookout
Sefris of the Hidden Ways
Tomb of Horrors Adventurer
Phantom Train
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 creature sacrifice triggersNear-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 Tomb of Horrors Adventurer from your graveyard onto the battlefield.
When Tomb of Horrors Adventurer enters, it triggers once and Preston triggers twice due to Delney.
Holding priority, activate Phantom Train by sacrificing Tomb of Horrors Adventurer.
Resolve a Preston trigger, creating a token copy of Tomb of Horrors Adventurer that is a 0/1 Illusion.
When the Tomb of Horrors Adventurer token enters, it triggers twice due to Delney.
Resolve the Tomb of Horrors Adventurer token triggers, venturing into Undercity twice.
Resolve the second Preston trigger from step 5, creating a token copy of Tomb of Horrors Adventurer that is a 0/1 Illusion.
Repeat steps 8 and 9 one additional time.
Resolve the Tomb of Horrors Adventurer trigger from step 5, venturing into Undercity and completing Undercity.