Pickerel had plans for an even greater unit combining the energy of two hundred and sixteen cubes but the project was hijacked by the military commanders of the Sechsäugigerwyrm and he never saw the final incarnation of his invention.
The MACC may be recharged with magical energy from any source. The initial prototypes were charged by MERCA units using living creatures as the primary source of the magical energy. The full scale military versions of the MACC require human life force, preferably magical. In this they are akin to the God stones created by the ancients but, whereas the god stones could only create magic appropriate to each god e.g. An Aphrodite stone for love spells, the MACC unit may create powerful spells of any type. However the energy storage in the MACC is not 100% efficient. Some energy is lost with each use and this appears as degradation of the storage and combiner crystals: especially the output combiners. Thus a super powerful MACC unit using more crystals that the 216 crystal variety would almost certainly be unstable and might explode when used.