How can you create a combo with Dockside Extortionist, Umbral Mantle, Splinter Twin?
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[START OF COMBO]This combo can be formed with Dockside Extortionist, Umbral Mantle, Splinter Twin

Color identity: R
Mana cost: 
Steps:
  1. Activate Dockside Extortionist by tapping it, creating a token copy of itself with haste.
  2. The token Dockside Extortionist enters the battlefield, creating at least four Treasure tokens.
  3. Activate three Treasure tokens by tapping and sacrificing them, adding {3}.
  4. Activate the nontoken Dockside Extortionist by paying {3} and untapping it, giving itself +2/+2 until end of turn.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite creature tokens with haste
  - Infinite enters the battlefield
  - Infinitely large Dockside Extortionist until end of turn
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Splinter Twin and Umbral Mantle attached to Dockside Extortionist.
  - Dockside Extortionist does not have summoning sickness.
  - Opponents control at least four artifacts and/or enchantments.
[END OF COMBO PREREQUISITES]
assistant