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Demiplane walls
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<blockquote data-quote="Bacon Bits" data-source="post: 7577228" data-attributes="member: 6777737"><p>The answer to digging through the walls is going to be some form of "it doesn't get you any more room." There's nothing outside the room. That's the entirety of the plane, meaning it's the entirety of the universe in which the room exists. How it works doesn't really matter. The could plane wrap on itself Portal-like or hall-of-mirrors-like, so that if you disintegrate the left wall and a hole appears in both the left and the right wall and travelling through the left wall leads through the right wall back into the room. Or beyond the walls is a black or silvery nothing that can't be entered, or an open sky that can't be entered. You don't get more than 27,000 cubic feet. Physical space just ends, and the universe of the demiplane is no bigger than that room. It's up to you to decide if space is curved or flat. Personally, I'd make the floor and ceiling flat silvery nothingness that can't be entered, and the walls Portal-like and wrapping because that seems fun.</p><p></p><p>In general, I would assume that the air supply is continually refreshed. That seems well within the power of an 8th level spell (after all, <em>rope trick</em> appears to do it at 2nd level, and <em>magnificent mansion</em> can certainly do it at 7th), and, IMO, the DM shouldn't be looking for gotchas to spells of this level (beyond <em>wish</em>, of course). Let the spell be as powerful as an 8th level spell. Let it accomplish things that an 8th level spell would be capable of. It's competing with <em>clone</em>, <em>control weather</em>, <em>earthquake</em>, <em>mind blank</em>, <em>tsunami</em>, etc. The power of the spell is in creating an array of reusable 30 foot rooms. The details like whether there's light or atmosphere are trivial compared to the rest of the spell. I'd tend towards giving the PCs the benefit of the doubt, and if they find a truly egregious abuse then change your mind. It's not really a problem if an 8th level spell replaces <em>rope trick</em> and <em>tiny hut</em>, or semi-replaces <em>magnificent mansion</em>.</p><p></p><p>I would say that the walls function exactly like normal stone or wood and are no more than 1 foot thick. The walls can be damaged, destroyed, or otherwise used, and they may either regenerate themselves or remain destroyed when the spell is recast. I don't think it's important which you chose, so you might let the caster decide. I would say the demiplane can either be illuminated like <em>tiny hut</em> is (i.e., a light that can be toggled at the occupants' decision), or can be permanently lit or dark, at the caster's decision. These are all very minor details in the grand scheme of creating a demiplane.</p><p></p><p>Personally, I wouldn't let there be a trash hole to the astral plane, but I've seen players abuse such things. There's a reason that the <em>bag of devouring</em> is considered a beneficial magic item to experienced parties. Being able to permanently dispose of creatures and objects without destroying them is very powerful.</p></blockquote><p></p>
[QUOTE="Bacon Bits, post: 7577228, member: 6777737"] The answer to digging through the walls is going to be some form of "it doesn't get you any more room." There's nothing outside the room. That's the entirety of the plane, meaning it's the entirety of the universe in which the room exists. How it works doesn't really matter. The could plane wrap on itself Portal-like or hall-of-mirrors-like, so that if you disintegrate the left wall and a hole appears in both the left and the right wall and travelling through the left wall leads through the right wall back into the room. Or beyond the walls is a black or silvery nothing that can't be entered, or an open sky that can't be entered. You don't get more than 27,000 cubic feet. Physical space just ends, and the universe of the demiplane is no bigger than that room. It's up to you to decide if space is curved or flat. Personally, I'd make the floor and ceiling flat silvery nothingness that can't be entered, and the walls Portal-like and wrapping because that seems fun. In general, I would assume that the air supply is continually refreshed. That seems well within the power of an 8th level spell (after all, [I]rope trick[/I] appears to do it at 2nd level, and [I]magnificent mansion[/I] can certainly do it at 7th), and, IMO, the DM shouldn't be looking for gotchas to spells of this level (beyond [I]wish[/I], of course). Let the spell be as powerful as an 8th level spell. Let it accomplish things that an 8th level spell would be capable of. It's competing with [I]clone[/I], [I]control weather[/I], [I]earthquake[/I], [I]mind blank[/I], [I]tsunami[/I], etc. The power of the spell is in creating an array of reusable 30 foot rooms. The details like whether there's light or atmosphere are trivial compared to the rest of the spell. I'd tend towards giving the PCs the benefit of the doubt, and if they find a truly egregious abuse then change your mind. It's not really a problem if an 8th level spell replaces [I]rope trick[/I] and [I]tiny hut[/I], or semi-replaces [I]magnificent mansion[/I]. I would say that the walls function exactly like normal stone or wood and are no more than 1 foot thick. The walls can be damaged, destroyed, or otherwise used, and they may either regenerate themselves or remain destroyed when the spell is recast. I don't think it's important which you chose, so you might let the caster decide. I would say the demiplane can either be illuminated like [I]tiny hut[/I] is (i.e., a light that can be toggled at the occupants' decision), or can be permanently lit or dark, at the caster's decision. These are all very minor details in the grand scheme of creating a demiplane. Personally, I wouldn't let there be a trash hole to the astral plane, but I've seen players abuse such things. There's a reason that the [I]bag of devouring[/I] is considered a beneficial magic item to experienced parties. Being able to permanently dispose of creatures and objects without destroying them is very powerful. [/QUOTE]
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