More questions for clarification purposes...

I'm thinking of a more support oriented character... And an ability and equipment set that goes hand in hand with the concept of a provisioner...

Basically a magically imbued container bout three feet wide, six to seven feet long, two feet tall... Often empty, but when said character scribbles on the inside wall of what is needed, say camping equipment... Feed some energy (and stuff if the former is lacking) into it, close the lid and wait a few minutes and when it is opened again it has in it what was scribbled on the inside wall which in this case is camping equipment... Although one cannot ask of the box something which cannot physically fit in it... And also not be able to produce something that the person doesn't know the details of... So one cannot ask the box to provide a piece of paper with the combination code for a lock unless the person already knew the combination for said lock in the first place...

Now for the question one...

Is what was described above fine?

Question two... Well more of a heads up that the magic category of a "medium sized fireball" (paraphrasing of course) is not really a good indicative to the power one can expect of it...