Color Identity: G, U

Prerequisites

  1.  All permanents on the battlefield.
  2. Umbral Mantle
    Umbral Mantle
    attached to
    Gyre Engineer
    Gyre Engineer
    .
  3. Gyre Engineer
    Gyre Engineer
    does not have summoning sickness.

Steps

  1. Activate
    Gyre Engineer
    Gyre Engineer
    by tapping it, adding ({G} magic symbol)  ({U} magic symbol)  .
  2. Activate
    Gyre Engineer
    Gyre Engineer
    by paying ({1} magic symbol)   and untapping it, giving itself +2/+2 until end of turn.
  3. Repeat.

Results

  1. Infinite blue mana.
  2. Infinite green mana.
  3. Infinitely large
    Gyre Engineer
    Gyre Engineer
    until end of turn.

Metadata

  1. In 63 decks according to EDHREC.
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