Spell Replicators are mages who specialize in being given a spell in one form and then have to be able to reproduce it for the client. It is not a difficult occupation and there are many mages that are replicators. The two requirements are perfect mana weaving, and a extremely accurate mana sensing ability. Duplicators create a copy of the artifact as replicators replicate the copy with the same spell used in the original. Even though replicators copied the spell from the original spell, it requires different skill sets compared to the one that created the spell.