Karn, the Great Creator + Aetherflux Reservoir

Karn, the Great Creator

Aetherflux Reservoir

How it works

1. Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Aetherflux Reservoir to become an artifact creature until end of turn.
2. Give Aetherflux Reservoir lifelink.
3. Activate Aetherflux Reservoir by paying 50 life, dealing 50 damage to any target and causing you to gain 50 life.
4. Repeat step 3.