Deeproot Pilgrimage + Vesuvan Doppelganger + Forensic Researcher

Deeproot Pilgrimage

Vesuvan Doppelganger

Forensic Researcher

How it works

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