Deeproot Pilgrimage + Kiora's Follower + Vesuvan Doppelganger

Deeproot Pilgrimage

Kiora's Follower

Vesuvan Doppelganger

How it works

1. Activate Kiora's Follower by tapping it, targeting Vesuvan Doppelganger.
2. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
3. Resolve the Kiora's Follower ability, untapping Vesuvan Doppelganger.
4. Activate Vesuvan Doppelganger by tapping it, targeting Kiora's Follower.
5. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
6. Resolve the Vesuvan Doppelganger ability, untapping Kiora's Follower.
7. Repeat.