Squee, the Immortal, Skyfire Phoenix, Birgi, God of Storytelling // Harnfel, Horn of Bounty, and Phyrexian Altar

Prerequisites

• Squee, the Immortal on the battlefield
• Skyfire Phoenix on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Squee and Skyfire Phoenix, adding
2. Cast Squee from your graveyard by paying
3. Skyfire Phoenix and Birgi trigger
4. Resolve the Birgi trigger, adding
5. Resolve the Skyfire Phoenix trigger, returning it from your graveyard to the battlefield
6. Repeat

Results

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