Etali, Primal Conqueror + Haunted Crossroads + Phyrexian Altar
Etali, Primal Conqueror
Haunted Crossroads
Phyrexian Altar
Requires
Etali, Primal Conqueror // Etali, Primal Sickness must be in hand.
Haunted Crossroads must be on the battlefield.
Phyrexian Altar must be on the battlefield.
Mana needed: 
Steps
- Cast Etali by paying .
- When Etali enters the battlefield, it triggers.
- Holding priority, activate Phyrexian Altar by sacrificing Etali, adding .
- Activate Haunted Crossroads by paying , putting Etali on top of your library from your graveyard.
- Resolve the Etali trigger from step 2, causing you to exile cards from each player's library until you exile a nonland card, with you exiling Etali from your library, and cast Etali and any other nonland cards exiled this way without paying their mana costs.
- Repeat from step 2.
Results
Cast all nonland cards from each opponent's library. Exile each opponent's library. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite storm count. Near-infinite magecraft triggers.
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