Altar of Dementia + Restoration Angel + Sister Hospitaller

Altar of Dementia

Restoration Angel

Sister Hospitaller

How it works

1. Cast Restoration Angel by paying its mana cost.
2. When Restoration Angel enters the battlefield, it triggers, targeting Sister Hospitaller
3. Holding priority, activate Altar of Dementia by sacrificing Restoration Angel.
4. Resolve the Restoration Angel ability, blinking Sister Hospitaller
5. When Sister Hospitaller enters, it triggers, returning Restoration Angel from your graveyard to the battlefield.
6. Repeat from step 2.