How can you create a combo with Maestros Charm, Underworld Breach, Storm-Kiln Artist, Rionya, Fire Dancer, Thassa's Oracle?
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[START OF COMBO]This combo can be formed with Maestros Charm, Underworld Breach, Storm-Kiln Artist, Rionya, Fire Dancer, Thassa's Oracle

Color identity: UBR
Mana cost: {U}{B}{R}
Steps:
  1. At the beginning of your combat phase, Rionya triggers, creating at least two token copies of Storm-Kiln Artist.
  2. Move to your post-combat main phase.
  3. If Maestros Charm is in your hand, cast it by paying {U}{B}{R}.
  4. Otherwise, cast it from your graveyard for its escape cost by paying {U}{B}{R} and exiling three cards from your graveyard, ensuring not to exile Thassa's Oracle if it is in your graveyard.
  5. Each Storm-Kiln Artist triggers, creating at least three Treasure tokens.
  6. Resolve Maestros Charm, causing you to look at the top five cards of your library, put one of them in your hand and put the rest into your graveyard.
  7. If you don't have an empty library, activate three Treasure tokens by tapping and sacrificing them, adding {U}{B}{R}.
  8. Repeat from step 3 until you have an empty library.
  9. Activate two Treasure tokens by tapping and sacrificing them, adding {U}{U}.
  10. If Thassa's Oracle is in your hand, cast it by paying {U}{U}.
  11. Otherwise, cast it for its escape cost by paying {U}{U} and exiling three cards from your graveyard.
  12. Thassa's Oracle enters the battlefield, causing you to win the game.[END OF COMBO STEPS]

Result:
  - Infinite self-mill
  - Near-infinite magecraft triggers
  - Near-infinite storm count
  - Win the game[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Maestros Charm must be in your hand or in the graveyard
  - Underworld Breach must be on the battlefield
  - Storm-Kiln Artist must be on the battlefield
  - Rionya, Fire Dancer must be on the battlefield
  - Thassa's Oracle must be in your hand or in the graveyard or in the library
  - You have cast at least one instant or sorcery this turn.
  - You have at least three other cards in your graveyard if Maestros Charm is in your graveyard.
[END OF COMBO PREREQUISITES]
assistant