Color Identity: U, R

Prerequisites

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

Results

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

Metadata

  1. In 61 decks according to EDHREC.
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