Here, Goldas concentrateds on a flow of mana in a figure 8 pattern being duplicated and the kenetic energy from the moving energy (yes, energy from energy, Mana has different rules) and turning the kenetic enegry to electrical energy. Sounds complicated, but is really quite simple to him. The most major problems is the glass figure 8 breaking under the strain of tons of mana being inside of the device, and the duplication of mana energies.