By casting Rise and Shine with its overload cost, you turn your Chromatic Orrery into an artifact creature with four +1/+1 counters, making it a legal and durable target for Voltaic Construct. Once animated, tapping the Chromatic Orrery generates five generic mana, which easily funds the two generic mana activation cost of Voltaic Construct to untap it. Because Chromatic Orrery's static ability lets you spend mana as though it were any color, this loop not only sustains itself indefinitely but also lets you cycle excess mana into drawing your entire deck for infinite card draw.