Su-Chi Cave Guard, Enduring Renewal, and Phyrexian Altar

Prerequisites

• Su-Chi Cave Guard on the battlefield
• Enduring Renewal on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Su-Chi Cave Guard, adding one mana of any color
2. When Su-Chi Cave Guard dies, it and Enduring Renewal trigger
3. Resolve the Su-Chi Cave Guard trigger, adding eight
4. Resolve the Enduring Renewal trigger, returning Su-Chi Cave Guard from your graveyard to your hand
5. Cast Su-Chi Cave Guard by paying
6. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count