Kiora's Follower, Judge of Currents, and Quicksilver Gargantuan

Prerequisites

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

Results

• Infinite lifegain
• Infinite lifegain triggers