Squee, the Immortal, Skyfire Phoenix, Rowan, Scion of War, and Phyrexian Altar

Prerequisites

• Squee, the Immortal on the battlefield
• Skyfire Phoenix on the battlefield
• Rowan, Scion of War on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Rowan by tapping it, causing black and red spells you cast to cost less for each life you've lost this turn
2. Activate Phyrexian Altar by sacrificing Squee and Skyfire Phoenix, adding
3. Cast Squee from your graveyard by paying
4. Skyfire Phoenix triggers, returning it from your graveyard to the battlefield
5. Repeat from step 2

Results

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