This clever loop turns any artifact creature into a mana-generating engine by completely reshaping the board with Mycosynth Lattice. Because the Lattice makes all permanents artifacts, even a non-artifact mana producer like Topiary Lecturer becomes a valid target for Voltaic Construct. You simply tap Topiary Lecturer for green mana, use a portion of that to pay for Voltaic Construct's untap ability, and repeat the cycle as many times as you desire.