How can you create a combo with Saheeli, the Sun's Brilliance, Timestream Navigator?
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[START OF COMBO]This combo can be formed with Saheeli, the Sun's Brilliance, Timestream Navigator

Color identity: UR
Mana cost: {2}{U}{U}{U}{R} each turn
Steps:
  1. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of Timestream Navigator with haste.
  2. Activate the Timestream Navigator token by paying {2}{U}{U}, tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.
  3. Repeat each turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You have the city's blessing.
[END OF COMBO PREREQUISITES]
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