One would think a wall of paper would do nothing against a rampaging fire monster, but the ofuda may as well be made from reinforced titanium and the Medicine Seller manipulates them with ease. If Varian tries to veer off course into a building or away from where Luz instructed, a wall of talismans spring up, red writing and fiery eyes thrumming on the paper as they seal the barriers while the Medicine Seller herds him along. When he can spare the time, he hands out sticks and cones of incense "to dull his frenzy that his friends might reach him". It's potent stuff, and though the beasts of Trench are different from the Mononoke in many respects, this is far from his first rodeo.

Or...

When all is said and done, the Medicine Seller lives up to his job description. From his bag, he produces containers of burn cream, poultices and gels, various disinfectants, bandages, and a kit for stitches. He came prepared, after all. And he doesn't even charge for it.