Tales and Chronicles
Jewel of the North, formerly know as vincegetorix
I like it, you either master the power of one-self (psionics) to gain magic or, for those unable or to weak to make that painful inner journey, you make a seemingly two-way deal with an outer power to gain magic (warlock). The key word being ''seemingly''.That's also a really cool setting idea.
Being born with magic in your veins, seeing magic in nature's patterns, devoting your magic to divine service, exploring the limits of magic through research or using magic as a communal performance...its all background really. How you develop those potentials is what matters in this setting.