Rift Achievement:Don't Be Cagey  

See also: Puzzles

Each cage has a represented color which is at the back of the cage. Work your way clockwise around the circle from the cage with the chest. When the color in the front matches the color on the back, quickly right-click to lock it in (see video below). The last cage should be the one with the chest, and if done correctly, it will open giving you a key to receive your loot.