the front side of River Song
the back of a classic MtG card
the front side of Timestream Navigator
the back of a classic MtG card

Color Identity: U, R

Initial Card State

  1.  River Song and Timestream Navigator on the battlefield.

Notable Prerequisites

  1. Timestream Navigator does not have summoning sickness.
  2. You have the city's blessing.

Mana Needed

  1. ({3} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  ({U} magic symbol)   each turn available.

Steps

  1. During your upkeep, activate Timestream Navigator by paying ({2} magic symbol)  ({U} magic symbol)  ({U} magic symbol)  , tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
  2. Move to your draw step, drawing Timestream Navigator from the bottom of your library due to River Song.
  3. Cast Timestream Navigator by paying ({1} magic symbol)  ({U} magic symbol)  .
  4. Repeat each turn.

Results

  1. Infinite turns.

Metadata

  1. In 2636 decks according to EDHREC.
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