How can you create a combo with Dockside Extortionist, Twilight Shepherd, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Dockside Extortionist, Twilight Shepherd, Ashnod's Altar

Color identity: RW
Mana cost: {R/W}{R}
Steps:
  1. Activate Ashnod's Altar by sacrificing Twilight Shepherd, adding {C}{C}.
  2. Twilight Shepherd dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. Twilight Shepherd enters the battlefield, triggering its ability.
  4. Holding priority, activate Ashnod's Altar twice by sacrificing Twilight Shepherd and Dockside Extortionist, adding {C}{C}{C}{C}.
  5. Resolve the Twilight Shepherd trigger, returning to your hand all cards that were put into your graveyard this turn.
  6. Cast Dockside Extortionist by paying {1}{R}.
  7. Dockside Extortionist enters the battlefield, creating at least three Treasure tokens.
  8. Activate the three Treasure tokens by tapping and sacrificing them, adding {R/W}{W}{W}.
  9. Activate Ashnod's Altar by sacrificing Dockside Extortionist, adding {C}{C}.
  10. Cast Twilight Shepherd by paying {3}{W}{W}{W}.
  11. Twilight Shepherd enters the battlefield, returning to your hand all cards that were put into your graveyard this turn.
  12. Cast Dockside Extortionist by paying {1}{R}.
  13. Dockside Extortionist enters the battlefield, creating at least three Treasure tokens.
  14. Activate two Treasure tokens by tapping and sacrificing them, adding {R}{R}.
  15. Repeat.[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 storm count
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Opponents control at least three artifacts and/or enchantments.
  - Twilight Shepherd does not have a -1/-1 counter on it.
[END OF COMBO PREREQUISITES]
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