I could offer a Prism Scale, a Protector, and a Whipped Dream for as many Master Balls as you'd be willing to trade. Actually, I have lots of Prism Scales, so if you prefer multiples, I could do that. Also, I've even got a few Metal Coats, so if you don't need any of the first set of items I mentioned, I could swap in one of those. Please let me know!