Kiora's Follower, Judge of Currents, and Synth Infiltrator

Prerequisites

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

Results

• Infinite lifegain
• Infinite lifegain triggers