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

• Sphere That Swallows the Galaxy
• Megamachine Construction
• Into the Deep Space
• Gravity Blaster
• It's Not Yet Time To Act

Required Card (1 card)

•  

  Number 9: Dyson Sphere

  Xyz/Effect

Selectable Cards (8 cards)

•  

  Planet Pathfinder

  Effect

•  

  Solar Wind Jammer

  Effect

•  

  Deep-Space Cruiser IX

  Effect

•  

  Tannhauser Gate

  Spell

•  

  Gravity Blaster

  Spell

•  

  Arcjet Lightcraft

  Effect