Power Core (Part 1)
Unlike a pseudo core, a power core could be realized one step at a time and even from different mages. Imbuing huge artifacts like a mage tower or an academy with several enchantments of different nature would have been impossible otherwise, even for someone who already owned a tower.
The different pieces had to be crafted so that the pseudo cores would merge after assembling their physical vessels. To do that, it was necessary to alter the usual order of Forgemastering procedures and leave the creation of the mana circulatory system for last.
On the one hand, it made the crafting of the single pieces simple since each one of them would only hold a small part of the final enchantment. On the other hand, the pseudo cores had to be positioned so that they wouldn't disrupt the formation of the mana circulatory system.