Kiora's Follower + Judge of Currents + Phantasmal Image

Kiora's Follower

Judge of Currents

Phantasmal Image

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 Phantasmal Image.
4. Activate Phantasmal Image by tapping it.
5. When Phantasmal Image becomes tapped, Judge of Currents triggers, causing you to gain 1 life.
6. Resolve Phantasmal Image's ability from step 4, untapping Kiora's Follower.
7. Repeat.

This clever setup relies on a mutual untapping loop between Kiora's Follower and a Phantasmal Image that has entered the battlefield as a copy of another Kiora's Follower. Because both creatures share the ability to untap any other target permanent, they can continuously untap one another back and forth for infinite activations. Meanwhile, Judge of Currents sits quietly on your board, watching the action and rewarding you with life every time one of these Merfolk becomes tapped to pay an activation cost.