Can I shadowstep to the Ethereal Plane if I can see into it?

I am currently playing a Way of Shadows Monk in D&D 5e and now have the Robe of Eyes. I am loving the MadMage campaign.

Since the Robe of Eyes says

You can see Invisible creatures and Objects, as well as see into the Ethereal Plane, out to a range of 120 feet.

And Shadowstep says

When you are in dim light or darkness, as a bonus action you can teleport up to 60 feet to an unoccupied space you can see that is also in dim light or darkness.

Does this mean that I can use Shadowstep to enter the Ethereal plane, scout around and then Shadowstep back in on the following round?

Is the negative energy plane underneath Golarion?

I had always been under the impression that Golarion and the negative energy plane were on entirely different metaphysical planes. This would mean that you couldn’t simply move from one to the other using mundane means.

The Tar-Baphon entry on Lost Omens: Legends says (pg.104):

Tar-Baphon dug a portal to the Negative Energy Plane on the Isle of Terror …

To me, this sounds like he physically dug a hole to the negative energy plane. At face value, this would only be possible if the negative energy plane were somehow underneath the earth of Golarion.

I have access to many of the PF2 books, but am weak in lore published in PF1 resources. Is it true that the negative energy plane is literally below Golarion?

If a Defiler native to Athas managed to get to another Material Plane, could they still use Defiling magic?

From what I understand, in Dark Sun, Defilers can destroy the plants around to make their magic more powerful. If a Defiler from Athas somehow ended up in another material plane (don’t care which, don’t care how), could they use the abundant life energy to power their spells? Or does Defiling only work on Athas due to the Weave or something?

Asking for a friend.

What happens if your body enters astral plane while under astral projection?

If a creature is under astral projection and their body is transported to astral plane, for instance because they got swallowed by the 2x bag of holding combo, what will happen?

Does the astral projection instantly end?
Does the astral projection get suspended until the body gets out the plane?
Does the creature get back to their original body in the astral plane when the spell ends?


Background:

Crawford tweets

In #DnD, the exceptional trumps the general. (No longer being a valid target trumps condition carryover.)

By entering astral plane, the creature would no longer be valid as the target of the spell (because astral projection specifically says so if the caster is on the astral plane), so I thought it will fail.

Fast query on the number of elements in a quarter plane

I have a scatter of 2D elements on a 2D plane.

I would like an efficient algorithm to prepare and query the number of points in a quarter plane (inclusive of boundary).

The quarter plane is defined by a point $ (x,y)$ . All elements $ (x’, y’)$ where $ x<=x’$ and $ y<=y’$ are in the quarter plane.

For example

  • I have elements [(1,1), (2,2), (1,2), (3,2)],
  • My queries are [(1,1), (2,2), (3,3)]

The program should return [1,3,4].

This is for a past competitive programming challenge (WiFi Network problem in this competition)

Where on the plane does a creature ejected from demiplane go?

The spell Create Demiplane states that "As a standard action, you may eject a creature from your demiplane. […] An ejected creature goes to the closest plane to your demiplane (usually the Astral Plane or the Ethereal Plane, but if you cast this spell on the Material Plane, the creature is sent to the Material Plane)"

The spell however does not specify where on the plane. I personally see 3 options:

  • The creature gets ejected to the place where the "Create Demiplane" spell was cast, this would be supported by the fact that the plane of ejection is tied to the plane of creation
  • The creature gets ejected to the place where it was before entering into the demiplane, this however would go against the rules if the demiplane was created on the Material but the creature came from somewhere else
  • The creature gets ejected to a random place in the destination plane, but in my opinion this option would have been openly specified, possibly with a "mishap" table

Has there been any clarification on this or is there some rule I missed to clear this out?

Can channel divinity affect a fiend in the ethereal plane?

In a fight with a Night Hag coven one hag uses the Heartstone to become ethereal, I know that divine sense can’t reach into the ethereal plane and sense her. But can a Channel Divinity affect her?

For example, the Oath of the Ancients paladin has this Channel Divinity option:

Turn the Faithless. You can use your Channel Divinity to utter ancient words that are painful for fey and fiends to hear. As an action, you present your holy symbol, and each fey or fiend within 30 feet of you that can hear you must make a Wisdom saving throw. On a failed save, the creature is turned for 1 minute or until it takes damage.

A turned creature must spend its turns trying to move as far away from you as it can, and it can’t willingly move to a space within 30 feet of you. It also can’t take reactions. For its action, it can use only the Dash action or try to escape from an effect that prevents it from moving. If there’s nowhere to move, the creature can use the Dodge action.

If the creature’s true form is concealed by an illusion, shapeshifting, or other effect, that form is revealed while it is turned.

Will it make the hag turned?