Summoning Engine

The Summoning Engine was a device, designed by Lucrezia Mongfish but built by Lady Vrin, that downloaded a copy of Lucrezia's concsiousness into the mind of another. Vrin apparently didn't put it together very well, because instead of working on any sparky girl, it only worked on Lucrezia's daughter, Agatha. One Lucrezia was present, however, she was able to improve the device to the extent that it was able to download a copy of Lucrezia into an advanced Clank brain.

It was kept in its own chapel in Sturmhalten castle until Lucrezia, anticipating Klaus's interference, had her Geisterdamen move it to parts unknown.