Aetherflux Reservoir + Purity + Angel of Vitality

Aetherflux Reservoir

Purity

Angel of Vitality

How it works

1. Activate Aetherflux Resevoir by paying 50 life, targeting yourself, but instead preventing the damage and causing you to gain 51 life due to Purity.
2. Repeat an arbitrarily large number of times.
3. Activate Aetherflux Resevoir by paying 50 life, dealing 50 damage to any target.
4. Repeat step 3 as desired.