There is already a scroll that does this although weaker.
I'm aware, one of my Advies had a Scroll of Hammerfall created.
Certainly. I hope there is a chance of magic completely backfiring and getting rid of all your spellcasting skills at once.
You sure you don't just want to play Crusader Kings 2 instead?
It is the job of each item owner to put item descriptions. You can't simple make the game generate this all the time. Either you will run into many items having common descriptions or it will require too much work for what little worth it has.
I know, I've only played BM since 2007, I've even wrote a couple! :p That was the point of my comparison with D&D's Longsword+1, there shouldn't be items of "little worth" in a low magic setting like BM is supposed to have. To expand the example, I feel items in BM should be more like artifacts in AD&D and earlier, there should only be a handful per island (that are recycled) and when they show up it's a status quo shaking event that encourages roleplaying and storytelling.