Medomai the Ageless, and Koh, the Face Stealer

Prerequisites

• Medomai the Ageless in exile
• Koh, the Face Stealer on the battlefield

Steps

1. Activate Koh by paying 1 life, causing it to gain Medomai's activated and triggered abilities
2. Deal combat damage using Koh, triggering Koh, causing you to take an extra turn after this one
3. Repeat step 2 each turn

Results

• Infinite turns