Ummm, hello. I have time and space...but I would need quick rundown on the rules. Also, I have (fairly high level) 3rd party archivist (rune caster) concept which is easily scaled down. Never played. If 3rd party is out...I'll read up on the rules here. Let me know if I can play.
EDIT: ooo, never played mythic.
Here are the links for rune magic
Rune magic
Arhivist class
Archivist studies
Script list
It is similar to a sorcerer - with limited number of scripts, but instead of having total number of slots each script has it's own pool of castings. Bonus from Int is floating (one pool of bonuses for all).