Opponents control at least six artifacts and/or enchantments.
({6} magic symbol) available.
Steps
Activate Cold Storage's first ability twice by paying ({6} magic symbol) , exiling Scholar of the Lost Trove and Dockside Extortionist from the battlefield.
Activate Cold Storage by sacrificing it, returning Dockside Extortionist and Scholar of the Lost Trove from exile to the battlefield.
When Dockside Extortionist and Scholar of the Lost Trove enter the battlefield, they trigger.
Resolve the Dockside Extortionist trigger, creating at least six Treasure artifact tokens.
Resolve the Scholar of the Lost Trove trigger, causing you to cast Cold Storage from your graveyard without paying its mana cost.
Activate six Treasures by tapping and sacrificing them, adding ({6} magic symbol) .
Repeat.
If opponents control seven or more artifacts and/or enchantments, this combo nets infinite Treasure tokens and colored mana.