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

Prerequisites

• Kiora's Follower on the battlefield
• Judge of Currents on the battlefield
• Vesuvan Shapeshifter on the battlefield
• Vesuvan Shapeshifter is a copy of Kiora's Follower
• Kiora's Follower and Vesuvan Shapeshifter do not have summoning sickness

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

Results

• Infinite lifegain
• Infinite lifegain triggers