Activate Lyzolda by paying {2} and sacrificing Dockside Extortionist.
When Dockside Extortionist dies, Nim Deathmantle triggers, causing you to pay {4} to return Dockside Extortionist from your graveyard to the battlefield, and attach Nim Deathmantle to it.
When Dockside Extortionist enters the battlefield, it triggers, creating at least seven Treasure tokens.
Resolve the Lyzolda ability from step 1, dealing 2 damage to any target.
Activate six Treasures by tapping and sacrificing them, adding {6}.
Repeat.

Infinite colored mana

Infinite damage

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Infinite Treasure tokens

Lyzolda, the Blood Witch

Nim Deathmantle

Dockside Extortionist

Combos with "Lyzolda, the Blood Witch"