Iron Chef Optimisation Challenge in the Playground LXXXV

[Inevitability]

Manual of the Planes gives the Astral Plane the "No Gravity" trait - the 3.5 DMG does give it the directional one and technically might overrule that (but the Planar Handbook clearly disagrees).

I don't know what, if any, trait the 3.0 DMG gave to the Astral Plane.

IMHO you should probably assume that the PrC assumes that the Astral has no gravity?

It doesn't matter: Heliomance already ruled that subjective directional gravity triggers the ability as well.