If you place the Pit from the Robe of Useful Items, will it remain there forever, as if it was dug? RAW, I assume so. The RAW on the Robe of Useful Items doesn't say anything about the items being temporary, so we should assume they are not.
I'm less convinced on Dispel Magic, and I know I will have to make a ruling on this, likely in a session or two, but I am leaning toward no. If the patch has "become the object or creature", then this is a normal, everyday, non-magical pit. The magic was in its creation, not its essence. As such, Dispel Magic would have no effect, right?
Or am I perhaps overlooking something?
Best Answer
The pit can not be dispelled, since it is not magical in any sense, and it is permanent.
The text of Dispel Magic spell says (emphasis mine):
To check if something is magical, one should apply the method described in the Sage Advice Compendium (see the question Is the breath weapon of a dragon magical?). The SAC says that if the answer to at least one of the following question is "yes", then this something is magical:
Let's check these possibilities one by one.
and nowhere it says that it is a magical pit.
The pit created by the patch of the Robe of Useful item does not satisfy any requirement to be considered magical, hence it can not be dispelled.
Moreover, the description does not have any duration entry: the pit is placed forever, or at least until someone fill it.