How can you create a combo with The Golden Throne, Final Fortune, Isochron Scepter, Prototype Portal?
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[START OF COMBO]This combo can be formed with The Golden Throne, Final Fortune, Isochron Scepter, Prototype Portal

Color identity: R
Mana cost: {6} each turn
Steps:
  1. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune, causing you to take an extra turn after this one and to lose the game at the end of that turn.
  2. Activate Prototype Portal by paying {4} and tapping it, creating a token copy of The Golden Throne.
  3.  Move to your next turn.
  4. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune, causing you to take an extra turn after this one and to lose the game at the end of that turn.
  5. At the beginning of your end step, the delayed ability of one of the Final Fortune copies triggers, exiling the token The Golden Throne and setting your life total to 1.
  6. Repeat from step 2.[END OF COMBO STEPS]

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

Other prerequisites:
  - The Golden Throne must be exiled
  - Final Fortune must be exiled
  - Isochron Scepter must be on the battlefield
  - Prototype Portal must be on the battlefield
[END OF COMBO PREREQUISITES]
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