How can you create a combo with Kenrith, the Returned King, Dockside Extortionist, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Kenrith, the Returned King, Dockside Extortionist, Ashnod's Altar

Color identity: WUBRG
Mana cost: {1}{R}
Steps:
  1. Cast Dockside Extortionist.
  2. Dockside Extortionist enters, triggering to create four Treasure tokens.
  3. Sacrifice Dockside Extortionist to Ashnod's Altar, adding {2}.
  4. Activate Kenrith's last ability, returning Dockside Extortionist from your graveyard to the battlefield.
  5. Sacrifice three Treasures for {2}{B}.
  6. Repeat steps 2 to 5.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Kenrith, the Returned King must be on the battlefield
  - Dockside Extortionist must be in your hand
  - Ashnod's Altar must be on the battlefield
  - Your opponents control four or more artifacts and/or enchantments.
[END OF COMBO PREREQUISITES]
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