How can you create a combo with Biovisionary, Repeated Reverberation, Cackling Counterpart?
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[START OF COMBO]This combo can be formed with Biovisionary, Repeated Reverberation, Cackling Counterpart

Color identity: GUR
Mana cost: {3}{U}{U}{R}{R}
Steps:
  1. Cast Repeated Reverberation by paying {2}{R}{R}, copying the next instant or sorcery spell you cast twice.
  2. Cast Cackling Counterpart by paying {1}{U}{U}, targeting Biovisionary.
  3. Repeated Reverberation triggers, copying Cackling Counterpart twice, with both copies targeting Biovisionary.
  4. Resolve all Cackling Counterparts, creating three token copies of Biovisionary.
  5. At the beginning of your end step, each Biovisionary triggers.
  6. Resolve the first trigger, causing you to win the game.[END OF COMBO STEPS]

Result:
  - Win the game[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Biovisionary must be on the battlefield
  - Repeated Reverberation must be in your hand
  - Cackling Counterpart must be in your hand
[END OF COMBO PREREQUISITES]
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