Verdant Succession + Worldspine Wurm + Altar of Dementia

Verdant Succession

Worldspine Wurm

Altar of Dementia

How it works

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.