For the most part I like it.
Thanks.
Spirit Sheath is pretty lame compared to Footwork, though.
Depends on what kind of magic you're facing. If it all targets Athletics, yeah, Footwork would be better...but if some of it targets Endurance, Might, or Discipline...well, then, you've got something handy there. Hell, you can parry mental attacks with it, since it's conceptually a counterspell, parrying the magic itself.
Outsider Bane is basically impossible to cost correctly given the totally undefined nature of Outsider Catches, but...what you have there is about as well-written as I can imagine it being.
Yeah...we're still really shaky on what Outsiders actually have going defensively.
If nobody minds, I'll clean up a couple of typos and add this to the list.
I, for one, am cool with it.