Orah, Skyclave Hierophant + Sister Hospitaller + Morophon, the Boundless + Altar of Dementia
Orah, Skyclave Hierophant
Sister Hospitaller
Morophon, the Boundless
Altar of Dementia
Infinite creature ETBInfinite creature LTBInfinite death triggersInfinite lifegainInfinite lifegain triggersInfinite millInfinite recursion of some creature cards in your graveyardInfinite creature sacrifice triggersInfinite self-mill
How it works
Activate Altar of Dementia by sacrificing Morophon.
When Morophon dies, Orah triggers, returning Sister Hospitaller from your graveyard to the battlefield.
When Sister Hospitaller enters, it triggers, returning Morophon from your graveyard to the battlefield and causing you to gain 7 life.
Resolve the Altar of Dementia ability.
Activate Altar of Dementia by sacrificing Sister Hospitaller.
When Sister Hospitaller dies, Orah triggers, allowing you to return a Cleric with mana value 5 or less from your graveyard to the battlefield.