There is a True 20 supplement called Eldritch Sorcery, I believe. I picked it up on a recommendation that it would help me achieve a campaign design goal- namely letting PCs design their own spells.
That it does, and well too! (Ultimately, though, it didn't do precisely what I needed, but I keep it on hand for reference.)
As for M&M, I'm not going to duplicate any suggestion above.
I've recently been told they're doing a supplement that will do for M&M what Fantasy HERO did for HERO. If so, that's going to be dang good news to me and to a lot of others out there.
http://www.enworld.org/forum/showthread.php?t=239132
That it does, and well too! (Ultimately, though, it didn't do precisely what I needed, but I keep it on hand for reference.)
As for M&M, I'm not going to duplicate any suggestion above.
I've recently been told they're doing a supplement that will do for M&M what Fantasy HERO did for HERO. If so, that's going to be dang good news to me and to a lot of others out there.
http://www.enworld.org/forum/showthread.php?t=239132