Cast Moritte by paying ({2} magic symbol) ({G} magic symbol) ({U} magic symbol) ({U} magic symbol) , choosing to have it enter the battlefield as a copy of Dockside Extortionist.
Moritte enters the battlefield, triggering itself, Cloudstone Curio and Cadric.
Resolve the Moritte trigger, creating at least four Treasure tokens.
Activate a Treasure token by tapping and sacrificing it, adding ({1} magic symbol) .
Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand from the battlefield.
Resolve the Cadric trigger, causing you to pay ({1} magic symbol) to create a token copy of Moritte that enters as a copy of Dockside Extortionist with haste.
The Moritte token enters the battlefield, triggering itself and Cloudstone Curio.
Resolve the Moritte trigger, creating at least four Treasure tokens.
Resolve the Cloudstone Curio trigger, returning the nontoken Moritte from the battlefield to your hand.
Activate five Treasure tokens by tapping and sacrificing them, adding ({2} magic symbol) ({G} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Repeat.
Once you have infinite Treasure tokens, you may instead have Moritte copy any other nonlegendary creature you control.
Results
Infinite colored mana.
Infinite copies of nonlegendary creatures you control with haste.