BF trader Keith teaches pickpocket up to lvl 7 for 4000.
Kiya

why don't you let him/her learn Hammer? A mage spell - either form the hermit in the Spider Area (he's cheap) up to lvl 5 - or more expensive from BF trader Elkar up to lvl 2 for 4000?

This is really a very good spell. Your char stuns and your DK finishes off.