I’m really unsure, I’ve been using the mystic forge to upgrade vials of potent blood (x50) to vials of powerful blood (5-12) and I started with 0% magic find, I am now using about 100% magic find gear, and I seem to be getting more. It could obviously just be chance, and I would like a statement on the mechanics behind this from the developers. Personally I doubt it highers your chance, but I don’t know.