Dockside Extortionist enters the battlefield, creating at least six Treasure tokens.
Activate five Treasure tokens by tapping and sacrificing them, adding ({1} magic symbol) ({UR} magic symbol) ({UR} magic symbol) ({U} magic symbol) ({R} magic symbol) .
Cast Lore Drakkis for its mutate cost by paying ({UR} magic symbol) ({UR} magic symbol) , mutating it on top of Dockside Extortionist.
Lore Drakkis triggers, returning Chain of Vapor from your graveyard to your hand.
Cast Chain of Vapor by paying ({U} magic symbol) , returning Lore Drakkis and Dockside Extortionist to your hand and choosing not to copy Chain of Vapor.