I've looked through quite a few posts, but haven't come across any fighters that use psionics and shadows. looking for something like the Nightblade, but with psionics. can anyone help me? thanks
Soulblade could probably be worked to something, as well as cryptic (maybe with the distorter archetype). Psychic warrior has several paths that could work too.
Take abilities that help with sneaking around or stealth, grants concealment, etc. And use shadow flavor.
Not a class but the cloak dance psi feat would fit the concept.