Chthonian Nightmare + Dockside Extortionist

BR identity

The 2 combo pieces

What must be in place

You have at least two energy counters.
Opponents control at least four artifacts and/or enchantments.
You control another nontoken creature with mana value 4 or less.

How to execute it

  1. Activate Chthonian Nightmare by paying {E}{E}, sacrificing a nontoken creature with mana value 4 or less and returning Chthonian Nightmare from the battlefield to your hand, returning Dockside Extortionist from your graveyard to the battlefield.
  2. When Dockside Extortionist enters the battlefield, it triggers, creating at least four Treasure tokens.
  3. Activate four Treasures by tapping and sacrificing them, adding {2}{B}{B}.
  4. Cast Chthonian Nightmare by paying {1}{B}.
  5. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
  6. Activate Chthonian Nightmare by paying at most {E}{E}{E}{E}, sacrificing Dockside Extortionist and returning Chthonian Nightmare from the battlefield to your hand, returning a creature with mana value 4 or less from your graveyard to the battlefield.
  7. Cast Chthonian Nightmare by paying {1}{B}.
  8. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
  9. Repeat.
  10. If opponents control five or more artifacts and/or enchantments, this combo nets infinite Treasure tokens and colored mana.
  11. If the creature sacrificed has mana value 3 or less, this combo nets infinite energy counters.

What the combo produces