Deeproot Pilgrimage + Phyrexian Metamorph + Forensic Researcher

Deeproot Pilgrimage

Phyrexian Metamorph

Forensic Researcher

How it works

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