Enduring Renewal, Phyrexian Altar, and Reef Worm

Prerequisites

• Enduring Renewal on the battlefield
• Phyrexian Altar on the battlefield
• Reef Worm on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Reef Worm, adding
2. When Reef Worm dies, it and Enduring Renewal triggers
3. Resolve the Reef Worm trigger, creating a 3/3 Fish creature token
4. Resolve the Enduring Renewal trigger, returning Reef Worm from your graveyard to your hand
5. Activate Phyrexian Altar by sacrificing the Fish, adding
6. When the Fish dies, it triggers, creating a 6/6 Whale creature token
7. Activate Phyrexian Altar by sacrificing the Whale, adding
8. When the Whale dies, it triggers, creating a 9/9 Kraken creature token
9. Activate Phyrexian Altar by sacrificing the Kraken, adding
10. Cast Reef Worm by paying
11. Repeat

Results

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