Agatha's Soul Cauldron + Deeproot Pilgrimage + Fatestitcher

U identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate the nontoken Merfolk using Fatestitcher's ability by tapping it.
  2. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
  3. Resolve the Merfolk's ability, untapping the other creature.
  4. Activate the other creature using Fatestitcher's ability by tapping it, untapping the nontoken Merfolk.
  5. Repeat.

What the combo produces