Color Identity: U, R, W

Prerequisites

  1.  
    Temporal Mastery
    Temporal Mastery
    in exile.
  2.  All permanents on the battlefield.
  3. Narset, Enlightened Master
    Narset
    does not have summoning sickness.
  4. An opponent is unable to block and kill
    Narset, Enlightened Master
    Narset
    .
  5. You have at least three other cards in exile.

Steps

  1. Activate
    Mirror of Fate
    Mirror of Fate
    by tapping and sacrificing it.
  2. Holding priority, activate
    Scrabbling Claws
    Scrabbling Claws
    by tapping it, causing you to exile
    Mirror of Fate
    Mirror of Fate
    from your graveyard.
  3. Resolve the
    Mirror of Fate
    Mirror of Fate
    ability, choosing itself,
    Temporal Mastery
    Temporal Mastery
    and three to five other cards, then exiling your library and putting the chosen cards on top, ensuring
    Temporal Mastery
    Temporal Mastery
    and
    Mirror of Fate
    Mirror of Fate
    are the topmost cards.
  4. Declare
    Narset, Enlightened Master
    Narset
    as an attacker.
  5. Narset, Enlightened Master
    Narset
    triggers, exiling the top four cards of your library and allowing you to cast them from exile this turn without paying their mana costs.
  6. Move to your postcombat main phase.
  7. Cast
    Temporal Mastery
    Temporal Mastery
    from exile without paying its mana cost, causing you to take an extra turn after this one and exile
    Temporal Mastery
    Temporal Mastery
    .
  8. Cast
    Mirror of Fate
    Mirror of Fate
    from exile without paying its mana cost.
  9. Repeat each turn.

Results

  1. Infinite turns.

Metadata

  1. In 14 decks according to EDHREC.
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