Color Identity: U

Prerequisites

  1.  
    Timestream Navigator
    Timestream Navigator
    in hand.
  2.  
    Riptide Laboratory
    Riptide Laboratory
    and
    Archmage of Echoes
    Archmage of Echoes
    on the battlefield.
  3. You have the city's blessing, and/or control (at least) eight permanents.
  4. ({1} magic symbol)  ({U} magic symbol)   available the first turn, with ({4} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  ({U} magic symbol)   each following turn available.

Steps

  1. Cast
    Timestream Navigator
    Timestream Navigator
    by paying ({1} magic symbol)  ({U} magic symbol)  .
  2. Archmage of Echoes
    Archmage of Echoes
    triggers, copying the
    Timestream Navigator
    Timestream Navigator
    spell.
  3. Resolve both
    Timestream Navigator
    Timestream Navigator
    spells.
  4. If you don't have the city's blessing, either the
    Timestream Navigator
    Timestream Navigator
    token or the nontoken
    Timestream Navigator
    Timestream Navigator
    gives you the city's blessing.
  5. During your next turn, activate
    Riptide Laboratory
    Riptide Laboratory
    's second ability by paying ({1} magic symbol)  ({U} magic symbol)   and tapping it, returning the nontoken
    Timestream Navigator
    Timestream Navigator
    to your hand from the battlefield.
  6. Activate the ability of the
    Timestream Navigator
    Timestream Navigator
    token by paying ({2} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  , tapping it and putting on the bottom of your library, causing you to take an extra turn after that one.
  7. Repeat.

Results

  1. Infinite turns.

Metadata

  1. In 612 decks according to EDHREC.
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