You have to add the required number of "Required Cards" and "Selectable Cards" as specified below. You are not required to set one of the "Skills Allowed."

Skills Allowed

• Volcanic Burning Deck
• Final Mission
• Blaze Accelerator Recovery
• Blaze Accelerator Reserve
• Blaze Accelerator Deployment
• Reloading!
• Volcanic Force
• Fight on the Front Lines
• Maximum Firepower
• FIRE Reload

Required Card (1 card)

•  

  Volcanic Doomfire

  Special Summon/Effect

Selectable Cards (8 cards)

•  

  Volcanic Shell

  Effect

•  

  Volcanic Doomfire

  Special Summon/Effect

•  

  Volcanic Rocket

  Effect

•  

  Blaze Accelerator

  Spell

•  

  Tri-Blaze Accelerator

  Spell