Keter Malkuth needs a core

Golem Keter Malkuth: Royal Crown, the Light of Wisdom— the A-ranked anti-army Noble Phantasm boasted by the Caster Avicebron.

"My Noble Phantasm is made to consume. Once summoned, it will continuously require an infinite amount of prana. As such, it requires a core."

"Yes, I understand. But we must be prudent in our selection. After all, it does not yet exist."

Caster nodded at his words

"That is true... perhaps I was being somewhat hasty. In any case, I will begin the casting for the components besides the core, and attune it so that the core can be inserted at any time."

"How long will this require?"

"If all goes well, it should take around three days."


Volume 1, Chapter 2, Page 73