"Incendio Maxima." A tsunami of fire, but Bellatrix douses it, turns it to ash and returns it as a cloud of noxious fumes. Hermione’s shield shivers under the impact. Her cold fingers cramp around her wand as she presses the ash particles together, together, until they form arrowheads of coal and diamond. They rush towards Bellatrix, but she slams them to the ground, where they form a single sheet of a blade that flies back towards Hermione. She dispels it before it can reach her toes, but it shears off a piece of her cloak. It flutters in the wind.