The needle's slender bamboo shaft gleams with etched silver veins, its tip a barbed obsidian spike coated in viscous, sulfurous resin that steams faintly at room temperature. When fired, it whistles through the air like a serpent's hiss, embedding deep into flesh where the resin erupts in a blistering surge of boiling agony. Skin bubbles and splits around the puncture, releasing acrid vapors that scald the wound from within.