Lets say you cast Create Pit and creature falls into the whole, and on next turn you place massive boulder or wall over the create pit so that it plugs the whole. What happens when the spell ends? Does the creature get shunted to next available space or will they be required to lift the boulder or be squished/pined?
|
Generally as GM, I'd displace them to an adjacent square (outward from the pit's former centre point by choice, otherwise the nearest legal square). If the object was 20 feet or more wide and very flat, they might take some damage by being squeezed out under it (not really defined, unless they were high enough level to justify using wall of iron's rules for the wall falling on them), but mostly there should have been a space where they could have slipped across as the pit closed up.
When you cast Create Pit on, say, a moving ship, the extradimensional space the pit occupies does not obstruct entities normally beneath the level the Create Pit spell occupies, and moves as the ship moves. This means that the space Create Pit makes betrays typical laws of physics, meaning anything that would interfere with or obstruct the entrance of the pit (such as by being technically stationary).
So, any logical thinking of "Have the pit raised back up and crush those trapped inside with a boulder covering any sense of escape" will not work due to that ideal not matching up to how the spell functions. As for filling the extradimensional space with water/sand/acid/goopygoop stuff, that's legal, as it's not obstructing the exit or entrance of the pit, but you'd need a lot of sand/water/acid/whatever to cover what amounts to ~20,000 cubic feet of extradimensional space.
Which then leads to the question of "If they aren't crushed, what happens?" This is a GM FIAT question, because the rules don't cover this and it's fairly corner-cased (though I see this combination come up often enough in threads that it warrants a FAQ thread), but I don't think creatures should be punished with what is basically a death penalty from a 2nd level spell, when the biggest power of that spell is changing the battlefield and forcing enemies out of fights (and thereby dividing their fighting power).
So, if you're a player, and a GM pulls these shenanigans on you, would you be okay with it? Then sure, rock falls, everyone dies. If, on the other hand, you find it to be a bunch of broken bulls#!^ that's totally unfair, then I'd go with the above interpretation and not give so much stock into a 2nd level spell.
|
|
Personally I am more interested in what happens when a created pit gets filled with water, or sand, or quick-dry cement ...
That's fine. The magic pit goes away, the real (or, more likely, magical with a longer duration) substance doesn't, so it makes a heap of the same volume at floor level, in the case of quick-dry cement, probably broken into chunks. This could be something of a problem in a small enclosed space.