Astral Projection was meant to be the spirit-walking side of the osteomancer. Word of Recall was him being able to return to defend the village at will.
And looking through the list, I don't really see any that strike me as out of line. I'll work through adding them in to the appropriate levels.
Of course, this is where Osteomancy (like Ritual Magic), runs headlong into a thematic disconnect between it and Arhosa, namely undead. But there's nothing much I can do about it because I don't want to nerf this class for no reason.