WotC just shared this Arcane Propulsion Arm! It functions as a 1d8-dmaage magic melee weapon which you can throw (don't worry, it flies back and reattaches).
I've not managed to get into The Expanse, but it's sounds like someone wrote up a Traveller campaign.
Sure, it's a wish, but it's a wish you can cast once a day minimum once you get it, and whaddya gonna do, go for world peace and put yourself out of work?What I would do would depend on the actual scenario and the history of the game to that point, but I promise that it would be cooler than "knock his arm off", this is WISH for goodness sake.
Wish that doesn't duplicate a spell effect has serious blowback.Sure, it's a wish, but it's a wish you can cast once a day minimum once you get it, and whaddya gonna do, go for world peace and put yourself out of work?