Kiora's Follower, Judge of Currents, and Phyrexian Metamorph

Prerequisites

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

Results

• Infinite lifegain
• Infinite lifegain triggers