Preston, the Vanisher + Altar of Dementia + Metamorphosis Fanatic + Nature's Rhythm
Preston, the Vanisher
Altar of Dementia
Metamorphosis Fanatic
Nature's Rhythm
Infinite creature ETBInfinite creature LTBInfinite creature tokensInfinite death triggersInfinite millInfinite recursion of creature cards in your graveyardInfinite creature sacrifice triggersInfinite self-mill
How it works
Cast Nature's Rhythm from your hand by paying 6 or from your graveyard for its harmonize cost by paying at most 6, searching your library for Metamorphosis Fanatic and putting it onto the battlefield.
When Metamorphosis Fanatic enters, it and Preston trigger.
Resolve the Metamorphosis Fanatic trigger, returning an applicable target from your graveyard to the battlefield.
Holding priority, activate Altar of Dementia by sacrificing Metamorphosis Fanatic.
Resolve the Preston trigger, creating a token copy of Metamorphosis Fanatic that is a 0/1 Illusion.
When the Metamorphosis Fanatic token enters, it triggers, returning Metamorphosis Fanatic from your graveyard to the battlefield.