How can you create a combo with Felhide Spiritbinder, Freed from the Real, Dockside Extortionist?
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[START OF COMBO]This combo can be formed with Felhide Spiritbinder, Freed from the Real, Dockside Extortionist

Color identity: UR
Mana cost: {1}{U}{U}{R}
Steps:
  1. Activate Freed from the Real's first ability by paying {U}, tapping Felhide Spiritbinder.
  2. Activate Freed from the Real's second ability by paying {U}, untapping Felhide Spiritbinder.
  3. Felhide Spiritbinder triggers, causing you to pay {1}{R} to create a token copy of Dockside Extortionist with haste.
  4. The token Dockside Extortionist enters the battlefield, creating at least five Treasure tokens.
  5. Activate four Treasure tokens by tapping and sacrificing them, adding {1}{U}{U}{R}.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite creature tokens with haste
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite Treasure tokens
  - Infinite untap of lands you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Freed from the Real attached to Felhide Spiritbinder.
  - Opponents control at least five artifacts and/or enchantments.
[END OF COMBO PREREQUISITES]
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