I was initially distrustful of the new Soulknife, but Psyren convinced me to look at it with different eyes and I must say it's awesome.

About xeph burst, as Greenish, I always thought it was a free action. I just checked the SRD, though, and it's a supernatural ability with no action listed, so it would be a standard action. It's weird, I always always thought it was a free action.