the front side of Goblin Welder
the back of a classic MtG card
the front side of Retreat to Coralhelm
the back of a classic MtG card
the front side of Seat of the Synod
the back of a classic MtG card
the front side of Darksteel Citadel
the back of a classic MtG card

Color Identity: U, R

Cards

  1. Card Back
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    Goblin Welder
  2. Card Back
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    Retreat to Coralhelm
  3. Card Back
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    Seat of the Synod
  4. Card Back
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    Darksteel Citadel

Initial Card State

  1.  
    Card Back
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    Seat of the Synod
    in your graveyard.
  2.  All other permanents on the battlefield.

Notable Prerequisites

  1. Card Back
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    Goblin Welder
    does not have summoning sickness.

Steps

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