Knight of Cygnus: Soul Master

why did you get powerstrike?

Because its common sense to get powerstrike? O.o
In first job you definitely need Powerstrike, HP Increase, and Slash Blast. 3 most mandatory skills.

And like ShiKage said, Soul Blade is a must. It's as important as a Bandit's SB and as important as an F/P's Fire Arrow. It's mandatory for early levels of 2nd job.