Brandish is a pretty talented mage. She may not have shown us a whole lot of attack spells but the scale of her abilities is nothing to sneeze at. She’s definitely not someone that you can afford to underestimate but Bly is well prepared to handle a foe like this. His dark arm blade and raw speed mean that Brandish will be the one playing catch up here. She will have a very hard time dealing with him and sorcery is a bad matchup to raw speed. Bly wins.