Item Construction is the skill to manufacture magical items.
In technical terms, the Item Construction skill allows a Servant to create an item that produces the same effects as a spell he or she knows and may be used without limit. The maximum amount of Zeon that may be put into a spell infused this way, as well as the amount of time that it takes to create such an item, varies by rank as detailed below.
: Up to 200 Zeon per item, 1 minute per 5 Zeon spent.
: Up to 150 Zeon per item, 10 minutes per 5 Zeon spent.
: Up to 100 Zeon per item, 1 hour per 5 Zeon spent.
: Up to 70 Zeon per item, 1 day per 5 Zeon spent.
: Up to 50 Zeon per item, 2 days per 5 Zeon spent.