Grand Master Sigmund:
What do you think, young man? Would you challenge the masters here just for the sake of learning a technique or two? Their teaching methods may be somewhat rough, but they're all very excellent teachers.
What happens if you get injured while receiving your training? Don't worry! The magister from the library across the road will chant a healing spell over you!

Sub-class
Clan
Alliance
Use a shadow weapon exchange coupon.
Quest