Infinite creature ETBInfinite creature LTBInfinite death triggersInfinite lifegainInfinite lifegain triggersInfinite recursion of some creature cards in your graveyardInfinite red manaInfinite creature sacrifice triggers
How it works
Activate Thermopod by sacrificing Valiant Changeling.
When Valiant Changeling dies, Orah triggers, returning Sister Hospitaller from your graveyard to the battlefield.
When Sister Hospitaller enters, it triggers, returning Valiant Changeling from your graveyard to the battlefield and causing you to gain 7 life.
Activate Thermopod 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.