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 ({2} magic symbol)   and untapping it, giving itself +2/+2 until end of turn.
  3. Repeat.

Results

  1. Infinitely large
    Gyre Engineer
    Gyre Engineer     until end of turn.

Metadata

  1. In 40 decks according to EDHREC.
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