City of Shadows + Derevi, Empyrial Tactician + Mycosynth Lattice + Panharmonicon

GWU identity

Commander legal

The 4 combo pieces

What must be in place

There are at least three storage counters on City of Shadows.

How to execute it

  1. Activate Derevi's ability to put him onto the battlefield from the command zone.
  2. Target City of Shadows with both Derevi's enter the battlefield ability and the copy of that ability from Panharmonicon.
  3. When the copy of Derevi's trigger untaps City of Shadows, activate City of Shadows' first ability, exiling Derevi.
  4. Elect to put Derevi in the command zone.
  5. When Derevi's trigger untapping City of Shadows, activate City of Shadows' second ability to add mana.
  6. Repeat.

What the combo produces