Color Identity: G, U

Prerequisites

  1.  All permanents on the battlefield (
    Fertile Ground
    Fertile Ground
    attached to a basic land you control).

Steps

  1. Activate the basic land with
    Fertile Ground
    Fertile Ground
    attached by tapping it, adding at least ({1} magic symbol)  .
  2. Fertile Ground
    Fertile Ground
    triggers, adding ({U} magic symbol)  .
  3. Activate
    Earthcraft
    Earthcraft
    by tapping
    Horseshoe Crab
    Horseshoe Crab
    , untapping the basic land.
  4. Activate
    Horseshoe Crab
    Horseshoe Crab
    by paying ({U} magic symbol)  , untapping it.
  5. Repeat.
  6. If the basic land is an Island, you may add mana of any color using
    Fertile Ground
    Fertile Ground
    's trigger, and you may infinitely repeat steps 3-4 with any other basic land you control.

Results

  1. Infinite colored mana.
  2. Infinite untap of basic lands you control.

Metadata

  1. In 9 decks according to EDHREC.
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