In the Beginning Was the Word, and the Word Was Suck: A Guide to Truenamers

[Fax Celestis]

Honestly, I think WotC came close to hitting the mark when they made Beckon Person. The spell works when you hit a flat DC 15 Truespeak check, but the higher your check is, the longer it lasts. You'd have to rebuild the system from the ground up, but I think that has more potential than the binary nonsense we've got now.

I've been messing around with a preparation/check/recharge system: you prepare a couple spells that you can use basically at will. When casting them, you make a check. Your check determines any possible augments the spell might have and determines how long you have to wait before you can use the spell again (generally measured in rounds). I've not put it to paper, but I'm thinking about it.