Aetherflux Reservoir, and Tezzeret, Agent of Bolas

Prerequisites

• Aetherflux Reservoir on the battlefield
• Tezzeret, Agent of Bolas on the battlefield
• You have a way to give Aetherflux Reservoir lifelink
• Your life total is at least 51

Steps

1. Activate Tezzeret's second loyalty ability by removing a loyalty counter from 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

Results

• Infinite damage
• Infinite lifegain triggers