Leonardo, Sewer Samurai, Tatterkite, Ashnod's Altar, and Birgi, God of Storytelling // Harnfel, Horn of Bounty

Prerequisites

• Leonardo, Sewer Samurai on the battlefield
• Tatterkite in the graveyard
• Ashnod's Altar on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• available

Steps

1. Cast Tatterkite from your graveyard by paying
2. It won't enter with a finality counter on it due to its static ability
3. Birgi triggers, adding
4. Activate Ashnod's Altar by sacrificing Tatterkite, adding Repeat

Results

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