Enduring Renewal, Umbral Collar Zealot, and Flamecache Gecko

Prerequisites

• Enduring Renewal on the battlefield
• Umbral Collar Zealot on the battlefield
• Flamecache Gecko in hand
• available

Steps

1. Cast Flamecache Gecko by paying its mana cost
2. When Flamecache Gecko enters, it triggers, adding
3. Activate Umbral Collar Zealot by sacrificing Flamecache Gecko
4. When Flamecache Gecko dies, Enduring Renewal triggers, returning Flamecache Gecko from your graveyard to your hand
5. Resolve the Umbral Collar Zealot ability, causing you to surveil 1
6. Repeat

Results

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