Restoration Angel + Sister Hospitaller + Yahenni, Undying Partisan

Restoration Angel

Sister Hospitaller

Yahenni, Undying Partisan

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 Yahenni 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 and causing you to gain 4 life.
6. Repeat from step 2.