Hello everyone, i need your help. I readed the rules for Spell Mastery and i have a question. But first the rules :
A magus can master a spell by reading a book, tractatus or summae about the mastery of the spell.
A magus can win point in spell mastery with the help of another magus (teaching).
My magus invent a totally original spell level 25. There is no book or teacher for this spell.
There is no way to learn the corresponding ability.
My question : how he can win ability point for this spell ?
I found no other rules for spell mastery. Did my magus had to use he's laboratory scores minus the level of the spell during one season ?
Lab score - magnitude x 5 = XP win in the corresponding ability
Thanks for your help