How can you create a combo with Narset's Reversal, Bonus Round, Dramatic Reversal?
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[START OF COMBO]This combo can be formed with Narset's Reversal, Bonus Round, Dramatic Reversal

Color identity: UR
Mana cost: {2}{R}{R}{U}
Steps:
  1. Cast Bonus Round by paying {1}{R}{R} and let it resolve.
  2. Activate nonland permanents by tapping them to add at least {1}{U}{U}.
  3. Cast Dramatic Reversal by paying {1}{U}.
  4. Bonus Round triggers, copying Dramatic Resolve.
  5. Let the copy of Dramatic Reversal resolve, untapping all nonland permanents you control.
  6. Cast Narset's Reversal by paying {U}{U}.
  7. Bonus Round triggers, causing you to copy Narset's Reversal and choose the original Narset's Reversal as its target.
  8. Let the copy resolve, copying Narset's Reversal and returning it to your hand, and choosing Dramatic Reversal as its target.
  9. Let the remaining Narset's Reversal copy resolve, copying Dramatic Reversal and returning it to your hand.
  10. Activate nonland permanents by tapping them to add at least {1}{U}{U}.
  11. Let the Dramatic Reversal copy resolve, untapping all nonland permanents you control.
  12. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite copies of instant or sorcery spells you can cast
  - Infinite magecraft triggers
  - Infinite mana nonland permanents you control can produce
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be in your hand
  - You control nonland permanents that can produce at least {1}{U}{U}.
[END OF COMBO PREREQUISITES]
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