Color Identity: U, R

Prerequisites

  1.  
    Darksteel Citadel
    Darksteel Citadel
    in your graveyard.
  2.  All other permanents on the battlefield.
  3. Goblin Welder
    Goblin Welder
    does not have summoning sickness.

Steps

  1. Activate
    Goblin Welder
    Goblin Welder
    by tapping it, causing you to sacrifice
    Great Furnace
    Great Furnace
    and return
    Darksteel Citadel
    Darksteel Citadel
    from your graveyard to the battlefield.
  2. Darksteel Citadel
    Darksteel Citadel
    enters the battlefield, triggering
    Retreat to Coralhelm
    Retreat to Coralhelm
    , untapping
    Goblin Welder
    Goblin Welder
    .
  3. Activate
    Darksteel Citadel
    Darksteel Citadel
    by tapping it, adding ({C} magic symbol)  .
  4. Activate
    Goblin Welder
    Goblin Welder
    by tapping it, causing you to sacrifice
    Darksteel Citadel
    Darksteel Citadel
    and return
    Great Furnace
    Great Furnace
    from your graveyard to the battlefield.
  5. Great Furnace
    Great Furnace
    enters the battlefield, triggering
    Retreat to Coralhelm
    Retreat to Coralhelm
    , untapping
    Goblin Welder
    Goblin Welder
    .
  6. Activate
    Great Furnace
    Great Furnace
    by tapping it, adding ({R} magic symbol)  .
  7. Repeat.

Results

  1. Infinite colorless mana.
  2. Infinite landfall triggers.
  3. Infinite red mana.

Metadata

  1. In 60 decks according to EDHREC.
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