Atsushi, the Blazing Sky, Birgi, God of Storytelling // Harnfel, Horn of Bounty, Mortuary, Phyrexian Altar, and Professional Face-Breaker

Prerequisites

• Atsushi, the Blazing Sky on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• Mortuary on the battlefield
• Phyrexian Altar on the battlefield
• Professional Face-Breaker on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Atsushi, adding
2. Atsushi dies, triggering itself and Mortuary
3. Resolve the Atsushi trigger, creating four Treasure tokens
4. Resolve the Mortuary trigger, causing you to put Atsushi on top of your library from your graveyard
5. Activate Professional Face-Breaker by sacrificing a Treasure, exiling Atsushi from the top of your library and allowing you to cast it from exile this turn
6. Activate the three remaining Treasure tokens by tapping and sacrificing them, adding
7. Cast Atsushi from exile by paying
8. Birgi triggers, adding
9. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count