Color Identity: G, W, U

Prerequisites

  1.  
    Derevi, Empyrial Tactician
    Derevi
    in the command zone.
  2.  All other permanents on the battlefield.
  3. There are at least three storage counters on
    City of Shadows
    City of Shadows
    .

Steps

  1. Activate
    Derevi, Empyrial Tactician
    Derevi
    's ability to put him onto the battlefield from the command zone.
  2. Target
    City of Shadows
    City of Shadows
    with both
    Derevi, Empyrial Tactician
    Derevi
    's enter the battlefield ability and the copy of that ability from
    Panharmonicon
    Panharmonicon
    .
  3. When the copy of
    Derevi, Empyrial Tactician
    Derevi
    's trigger untaps
    City of Shadows
    City of Shadows
    , activate
    City of Shadows
    City of Shadows
    ' first ability, exiling
    Derevi, Empyrial Tactician
    Derevi
    .
  4. Elect to put
    Derevi, Empyrial Tactician
    Derevi
    in the command zone.
  5. When
    Derevi, Empyrial Tactician
    Derevi
    's trigger untapping
    City of Shadows
    City of Shadows
    , activate
    City of Shadows
    City of Shadows
    ' second ability to add mana.
  6. Repeat.
  7. .

Results

  1. Infinite colored mana.
  2. Infinite colorless mana.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinite untap.

Metadata

  1. In 1 deck according to EDHREC.
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