These strange devices were created before the birth of RUIN and revolutionized life in the floating city. The main use for these Cores is to power Automatons
allowing them to be used for cheap labor, but as time went on so did the development of these Cores. Now they can be used to power all kinds of magic based technology such as High Powered Magical Implement
and other useful tools. In order to create a Mana Core you require a very specific type of training that only certain specialists can teach. This kind of knowledge is outside of public eyes and is reserved for master craftsmen. Wizards and other learned magicians usually study Cores in an effort to try unlocking their magical secrets and to use them for their own purposes.