"Voluble Mage" is a really strange word that'll be unfamiliar to most people. Since it prevents silence, I've got another name: "Spellshouter", which I think conveys the same idea.
Honestly i think it should be something like this:
Uttering Curses Allows you to still use offensive magic while muted.
EDIT: I'm getting into this game. I haven't been around these forums long but from what i hear, Stabbey is the big "Balance guy". You'll have another one of those coming if i end up getting involved :P
