Color Identity: G, U, R

Prerequisites

  1.  All permanents on the battlefield (
    Rattleclaw Mystic
    Rattleclaw Mystic     and
    Master of the Veil
    Master of the Veil     face down).
  2. ({2} magic symbol)   available.

Steps

  1. Activate
    Rattleclaw Mystic
    Rattleclaw Mystic    's morph ability by paying ({2} magic symbol)  , turning it face-up.
  2. Ratteclaw Mystic triggers twice, adding ({G} magic symbol)  ({G} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  ({R} magic symbol)  ({R} magic symbol)  .
  3. Activate
    Master of the Veil
    Master of the Veil    's morph ability by paying ({2} magic symbol)  ({U} magic symbol)  , turning it face-up.
  4. Master of the Veil
    Master of the Veil     triggers twice, turning
    Rattleclaw Mystic
    Rattleclaw Mystic     and
    Master of the Veil
    Master of the Veil     face-down.
  5. Repeat.

Results

  1. Infinite blue mana.
  2. Infinite green mana.
  3. Infinite red mana.

Metadata

  1. In 29 decks according to EDHREC.
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