How can you create a combo with Tawnos, Urza's Apprentice, Isochron Scepter, Stifle, Final Fortune?
user
[START OF COMBO]This combo can be formed with Tawnos, Urza's Apprentice, Isochron Scepter, Stifle, Final Fortune

Color identity: UR
Mana cost: {4}{U}{R} on your first turn, with {2} available on each extra turn
Steps:
  1. Cast Isochron Scepter by paying {2}.
  2. Isochron Scepter enters the battlefield, triggering its imprint ability.
  3. Holding priority, activate Tawnos by paying {U}{R} and tapping it, copying Isochron Scepter's trigger.
  4. Resolve both Isochron Scepter triggers, exiling Stifle and Final Fortune from your hand.
  5. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Final Fortune without paying its mana cost.
  6. Resolve Final Fortune, causing you to take an extra turn after this one.
  7. Move to your next turn.
  8. At the beginning of the end step during your extra turn, Final Fortune triggers.
  9. Holding prioirty, activate Isochron Scepter by paying {2} and tapping it, casting a copy of Stifle and Final Fortune without paying their mana cost.
  10. Resolve Stifle, countering Final Fortune's trigger from step 8.
  11. Repeat from step 6.[END OF COMBO STEPS]

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

Other prerequisites:
  - Tawnos, Urza's Apprentice must be on the battlefield
  - Isochron Scepter must be in your hand
  - Stifle must be in your hand
  - Final Fortune must be in your hand
[END OF COMBO PREREQUISITES]
assistant