the front side of Adaptive Training Post
the back of a classic MtG card
the front side of Expansion // Explosion
the back of a classic MtG card

Color Identity: U, R

Initial Card State

  1.  
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    Expansion // Explosion
    in hand.
  2.  
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    Adaptive Training Post
    on the battlefield (with two or more charge counters on it).

Notable Prerequisites

  1. You have an instant or sorcery card in hand with mana value 4 or less.

Mana Needed

  1. ({UR} magic symbol)  ({UR} magic symbol)   plus enough mana to cast the additional instant or sorcery available.

Steps

  1. Cast the additional instant or sorcery by paying its mana cost.
  2. If
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    Adaptive Training Post
    had two charge counters on it, it triggers, putting a charge counter on it.
  3. Holding priority, activate
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    Adaptive Training Post
    by removing three charge counters from it, copying the next instant or sorcery spell you cast this turn.
  4. Cast
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    Expansion
    by paying its mana cost, targeting the spell cast in step 1.
  5. Card Back
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    Adaptive Training Post
    triggers, copying
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    Expansion
    , with the copy targeting the original
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    Expansion
    .
  6. Resolve the copy of
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    Expansion
    , copying the original
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    Expansion
    , with the copy targeting the original
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    Expansion
    .
  7. Repeat step 5.

Results

  1. Infinite magecraft triggers.

Metadata

  1. In 1437 decks according to EDHREC.

Variants of this combo

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