Kiora's Follower, Judge of Currents, and Vesuvan Doppelganger

Prerequisites

• Kiora's Follower on the battlefield
• Judge of Currents on the battlefield
• Vesuvan Doppelganger on the battlefield

Steps

1. Activate Kiora's Follower by tapping it
2. When Kiora's Follower becomes tapped, Judge of Currents triggers, causing you to gain 1 life
3. Resolve Kiora's Follower's ability from step 1, untapping Vesuvan Doppelganger
4. Activate Vesuvan Doppelganger by tapping it
5. When Vesuvan Doppelganger becomes tapped, Judge of Currents triggers, causing you to gain 1 life
6. Resolve Vesuvan Doppelganger's ability from step 4, untapping Kiora's Follower
7. Repeat

Results

• Infinite lifegain
• Infinite lifegain triggers