Krafen said:No, the dimension door ability only works on planes with the shifting trait. This is clearer in the DMG than it is in the SRD. The bonus to fly speed from the weightless planar terrain has a similar restriction.
Terrain Mastery said:Horizon walkers take their terrain mastery with them wherever they go.
Planar Terrain Mastery said:Planar terrain mastery functions just like terrain mastery, except that the horizon walker can choose one of the planar categories at each level
Shifting (Planar): You instinctively anticipate shifts in the reality of the plane that bring you closer to your destination, giving you the spell-like ability to use dimension door (as the spell cast at your character level) once every 1d4 rounds. You gain a +1 insight bonus on attack and damage rolls against outsiders and elementals native to a shifting plane.
OStephens said:While the fly speed is clearly limited to planes with no gravity or subjective gravity, it is less clear they can only plane shift in planes with the shifting trait. It does mention that the ability is based on knowing how to use such traits to their advantage, but it doesn't say they are limited to such planes.
One could certainly argue the dimension door works on any plane, or on any plane connected to a plane with the shifting trait. If a GM ran it either way, I wouldn't complain.
In any case, I certainly wouldn't consider a dd 1ce/day to be unbalancing.
AuraSeer said:The dimension door ability works on every plane. I've got confirmation from the Sage on this; I can post the emails if you like.
HW abilities work everywhere unless specifically restricted. The Weightless mastery has such a restriction, but Shifting does not, so your DDoor works just fine on the Prime Material.
zlorf said:The Horizon Walker gets to do this every 1d4 rounds, not once per day.
Zlorf
OStephens said:You're quite right and good point. (My horizon walker never got to that level.) Even so, that's not so out of bounds for a minimum 11th level character.