The goddess Eris is briefly mention in On Hallowed Ground, but not given a write-up or even included in the cut-down entries. Given that she started a major war over that bit with the golden apple ("For The Fairest"), it seems like she should be a "player" in Planescape. How would you write her up in Planescape terms? Seems like she would be a terrific deity for a Xaositech!
Also, about the Egyptian demigod Apshai... I can't find this Power listed in any of my books on ancient gods. Even the one I got from the library specifically ABOUT Egyptian deities didn't give Apshai a mention. Is this an actual, historical deity, or did TSR invent Apshai from thin air?