How can you create a combo with Kaya the Inexorable, Karn's Temporal Sundering?
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[START OF COMBO]This combo can be formed with Kaya the Inexorable, Karn's Temporal Sundering

Color identity: WUB
Mana cost: {4}{U}{U}
Steps:
  1. Activate Kaya's third loyalty ability by removing seven loyalty counters from it, causing you to get an emblem.
  2. Cast Karn's Temporal Sundering by paying {4}{U}{U}, causing you to take an extra turn after this one.
  3. Move to your next turn.
  4. At the beginning of your upkeep, Kaya's emblem triggers, causing you to cast Karn's Temporal Sundering from your graveyard without paying its mana cost.
  5. Resolve Karn's Temporal Sundering, causing you to take an extra turn after this one.
  6. Repeat from step 3.[END OF COMBO STEPS]

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

Other prerequisites:
  - Kaya the Inexorable must be on the battlefield
  - Karn's Temporal Sundering must be in your hand
  - Kaya the Inexorable has at least seven loyalty counters on it.
  - You control an additional legendary creature or planeswalker if Kaya the Inexorable has seven loyalty counters on it.
[END OF COMBO PREREQUISITES]
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