Preston, the Vanisher + Sister Hospitaller + Altar of Dementia + Nature's Rhythm
Preston, the Vanisher
Sister Hospitaller
Altar of Dementia
Nature's Rhythm
Infinite creature ETBInfinite creature LTBInfinite creature tokensInfinite death triggersInfinite millInfinite recursion of creature cards in your graveyardInfinite creature sacrifice triggersInfinite self-millInfinite lifegainInfinite lifegain triggers
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 Sister Hospitaller and putting it onto the battlefield.
When Sister Hospitaller enters, it and Preston trigger.
Resolve the Sister Hospitaller trigger, returning an applicable target from your graveyard to the battlefield.
Holding priority, activate Altar of Dementia by sacrificing Sister Hospitaller.
Resolve the Preston trigger, creating a token copy of Sister Hospitaller that is a 0/1 Illusion.
When the Sister Hospitaller token enters, it triggers, returning Sister Hospitaller from your graveyard to the battlefield.