Healing potions were not a solution, because it was the body that regenerated over hours, and it wouldn't change anything, even if he took a high-quality potion.
Katrina, still perched high on the rubble, simply raised two fingers in the air and immediately other magic circles appeared behind her, lighting up one after another in shades of blue.
Seeing this display of power, he immediately understood her intention without needing to think long: she wanted to keep him at a distance by using a continuous barrage of projectiles to prevent him from approaching. Despite this obvious fact, he still charged toward her, refusing to be intimidated by the impending rain.
