This elegant three-card loop transforms a simple tap ability into an engine of boundless energy by turning your entire board into a hardware store. Encroaching Mycosynth is the crucial foundation here, making Kami of Whispered Hopes an artifact in addition to its other types so it can be targeted by mechanical untap effects. Once Kami is an artifact, Voltaic Construct can target it directly, resetting its tap ability for the cost of two mana. Because Kami of Whispered Hopes scales its own power and mana production upward with every counter placed—boosted by its own replacement effect—tapping it generates more than enough mana to pay for Voltaic Construct's activation and still come out ahead, leaving you with infinite colored mana and an infinitely untapping artifact creature.