Deeproot Pilgrimage + Forensic Researcher + Mercurial Pretender

U identity

Commander legal

The 3 combo pieces

What must be in place

Mercurial Pretender on the battlefield as a copy of Forensic Researcher.
Forensic Researcher and Mercurial Pretender do not have summoning sickness.

How to execute it

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

What the combo produces