How can you create a combo with Riku of Two Reflections, Finale of Devastation, Biovisionary, Mirror Image?
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[START OF COMBO]This combo can be formed with Riku of Two Reflections, Finale of Devastation, Biovisionary, Mirror Image

Color identity: GUR
Mana cost: {3}{U}{U}{U}{R}{G}{G}{G}{G}
Steps:
  1. Cast Finale of Devastation by paying {3}{G}{G}.
  2. Holding priority, activate Riku by paying {U}{R}, copying Finale of Devastation.
  3. Resolve the copy of Finale of Devastation, searching your library and/or graveyard for Biovisionary and putting it onto the battlefield.
  4. Riku triggers, causing you to pay {U}{G} to create a token copy of Biovisionary.
  5. Resolve the original Finale of Devastation, searching your library and/or graveyard for Mirror Image and putting it onto the battlefield as a copy of Biovisionary.
  6. Riku triggers, causing you to pay {U}{G} to create a token copy of Mirror Image, which enters the battlefield as a copy of Biovisionary.
  7. At the beginning of your end step, each Biovisionary triggers.
  8. Resolve the first Biovisionary trigger, causing you to win the game.[END OF COMBO STEPS]

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

Other prerequisites:
  - Riku of Two Reflections must be on the battlefield
  - Finale of Devastation must be in your hand
  - Biovisionary must be in the graveyard or in the library
  - Mirror Image must be in the graveyard or in the library
[END OF COMBO PREREQUISITES]
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