Go to the Will training area and talk to the black cloaked guy to test your Will abilities. (If you just finished your will training with the guild master, you'll have to wait for a bit before he gets there),
Within the 30 second time limit, hit as many targets as you can, if you get 11 or more, you will get an A+.
- Earning an A+ gets you
- 1 x Will Potion
- 1 x Resurrection Phial