Kiora's Follower + Judge of Currents + Phyrexian Metamorph

Kiora's Follower

Judge of Currents

Phyrexian Metamorph

How it works

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.

This clever loop centers around a mutual admiration society between Kiora's Follower and a clone. By having Phyrexian Metamorph enter the battlefield as a copy of Kiora's Follower, you end up with two creatures that can each untap the other with their active abilities. Meanwhile, the presence of Judge of Currents turns every single one of those back-and-forth taps into a soothing stream of life, rewarding your Merfolk synergy with infinite lifegain.