How can you create a combo with Dockside Extortionist, Mechanized Production?
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[START OF COMBO]This combo can be formed with Dockside Extortionist, Mechanized Production

Color identity: UR
Mana cost: {3}{U}{U}{R}
Steps:
  1. Cast Dockside Extortionist by paying {1}{R}.
  2. When Dockside Extortionist enters the battlefield, it triggers, creating at least seven Treasure tokens.
  3. Cast Mechanized Production by paying {2}{U}{U} while keeping at least seven Treasures on the battlefield, attaching it to a Treasure you control.
  4. At the beginning of your next upkeep, Mechanized Production triggers, creating a token copy of the artifact it is attached to and causing you to win the game.[END OF COMBO STEPS]

Result:
  - Win the game at the beginning of your next upkeep[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be in your hand
  - Opponents control at least seven artifacts and/or enchantments; additional permanents beyond this minimum can reduce the mana needed.
[END OF COMBO PREREQUISITES]
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