How can you create a combo with Enigmatic Incarnation, Timestream Navigator, Rancor?
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[START OF COMBO]This combo can be formed with Enigmatic Incarnation, Timestream Navigator, Rancor

Color identity: GU
Mana cost: {2}{U}{U} on your first turn, with {2}{G}{U}{U} available on each extra turn
Steps:
  1. Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it onto the bottom of your library, causing you to take an extra turn after this one.
  2. At the beginning of your end step, Enigmatic Incarnation triggers, causing you to sacrifice Rancor and then search your library for Timestream Navigator and put it onto the battlefield.
  3. Rancor triggers, returning itself from your graveyard to your hand.
  4. Move to your next turn.
  5. Cast Rancor by paying {G}, attaching it to any other creature you control.
  6. Repeat.[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 does not have summoning sickness.
  - Rancor attached to any other creature except Timestream Navigator.
[END OF COMBO PREREQUISITES]
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