Kiora's Follower | Judge of Currents | Chameleon, Master of Disguise

Cards

All permanents on the battlefield (
Kiora's Follower without summoning sickness and
Chameleon as a copy of
Kiora's Follower and without summoning sickness).

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

This combo has been estimated to be Exhibition (Bracket 1+).