Magician? Haa... None that I could recall hearing of.

[His smile turned sheepish to that question.]

Blastias are an invention from Rita's world so, unfortunately, nothing beyond what she has shared with me thus far.

[He pulled out the one Rita lent him from his pouch and showed it to Tyr.]

They truly are magnificent and fascinating artifacts. There are a few different types if I'm not mistaken. This one in particular enhances the use of mana.