Verdant Succession, Worldspine Wurm, and Altar of Dementia

Prerequisites

• Verdant Succession on the battlefield
• Worldspine Wurm on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Worldspire Wurm
2. Worldspire Wurm dies, triggering itself and Verdant Succession
3. Resolve the Worldspire Wurm trigger, shuffling it into your library
4. Resolve the Verdant Succession trigger, searching your library for Worldspire Wurm, putting it onto the battlefield and shuffling your library
5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Worldspire Wurm's power
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill