Kiora's Follower, Judge of Currents, and Sakashima the Impostor

Prerequisites

• Kiora's Follower on the battlefield
• Judge of Currents on the battlefield
• Sakashima the Impostor on the battlefield
• Sakashima the Impostor is a copy of Kiora's Follower
• Kiora's Follower and Sakashima the Impostor 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 Sakashima the Impostor
4. Activate Sakashima the Impostor by tapping it
5. When Sakashima the Impostor becomes tapped, Judge of Currents triggers, causing you to gain 1 life
6. Resolve Sakashima the Impostor's ability from step 4, untapping Kiora's Follower
7. Repeat

Results

• Infinite lifegain
• Infinite lifegain triggers