How can you create a combo with Astral Dragon, Swift Reconfiguration, Lithoform Engine?
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[START OF COMBO]This combo can be formed with Astral Dragon, Swift Reconfiguration, Lithoform Engine

Color identity: WU
Mana cost: {8}{W}{U}{U}
Steps:
  1. Cast Astral Dragon by paying {6}{U}{U}.
  2. When Astral Dragon enters the battlefield, its ability triggers.
  3. Holding priority, cast Swift Reconfiguration by paying {W}, attaching it to Astral Dragon and causing Astral Dragon to become a Vehicle artifact with no other card types.
  4. Activate Lithoform Engine's first ability by paying {2} and tapping it, copying Astral Dragon's trigger from step 2, targeting Astral Dragon.
  5. Resolve the copy of Astral Dragon's ability, creating two token copies of Astral Dragon that are 3/3 Dragons in addition to their other types.
  6. When the Astral Dragon tokens enter the battlefield, their abilities trigger, targeting the nontoken Astral Dragon.
  7. Resolve the first Astral Dragon token's trigger, creating two token copies of Astral Dragon that are 3/3 Dragons in addition to their other types.
  8. Repeat from step 6.[END OF COMBO STEPS]

Result:
  - Infinite copies of noncreature permanents you control
  - Infinite creature tokens
  - Infinite enters the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Astral Dragon must be in your hand
  - Swift Reconfiguration must be in your hand
  - Lithoform Engine must be on the battlefield
[END OF COMBO PREREQUISITES]
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