Sin, Unending Cataclysm + Verdant Succession + Altar of Dementia
Sin, Unending Cataclysm
Verdant Succession
Altar of Dementia
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite millInfinite self-millInfinite +1/+1 counters on creatures you control
How it works
Activate Altar of Dementia by sacrificing Sin.
When Sin dies, it and Verdant Succession trigger.
Resolve the Sin trigger, moving any counters from it onto another creature you control, and then shuffling Sin into your library.
Resolve the Verdant Succession trigger, searching your library for Sin and putting it onto the battlefield.