A truly xeph-tional creature. Haha funny joke.
Reasonably standard player race humanoid. +2 dex, -2 strength, 1 bonus power point, +1 on saves against most magic, darkvision, and the ability to 3/day increase speed by 10 to 30 feet for a few rounds (by RAW it's a standard action to activate, but it's pretty clearly intended by be swift). Favored class is soulknife but let's not honor that with an analysis.
Notable option: the Xeph Celerity feat, which allows you to expend Burst uses to add an attack to your full attack. It's slightly synergetic with Soul Eater (especially the capstone), and such a character would probably be pretty neat.
Clear +0, moving on.