Sin, Unending Cataclysm, Verdant Succession, and Spawning Pit

Prerequisites

• Sin, Unending Cataclysm on the battlefield
• Verdant Succession on the battlefield
• Spawning Pit on the battlefield

Steps

1. Activate Spawning Pit by sacrificing Sin
2. When Sin dies, it and Verdant Succession trigger
3. Resolve the Sin trigger, moving any counters from it onto another creature you control, and then shuffling Sin into your library
4. Resolve the Verdant Succession trigger, searching your library for Sin and putting it onto the battlefield
5. Resolve the Spawning Pit ability
6. Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers