How can you create a combo with Jalira, Master Polymorphist, Nadir Kraken, Timestream Navigator?
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[START OF COMBO]This combo can be formed with Jalira, Master Polymorphist, Nadir Kraken, Timestream Navigator

Color identity: U
Mana cost: {5}{U}{U}{U} each turn
Steps:
  1. During your draw step, Nadir Kraken triggers, causing you to pay {1} to put a +1/+1 counter on it and creating a 1/1 Tentacle creature token.
  2. Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
  3. Activate Jalira by paying {2}{U}, tapping it and sacrificing the Tentacle, causing you to reveal Timestream Navigator and put it onto the battlefield.
  4. 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.
  - Timestream Navigator and Jalira do not have summoning sickness.
  - You have no other nonlegendary creatures in your library.
[END OF COMBO PREREQUISITES]
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