The arrow's shaft gleams with etched silver runes that pulse faintly under moonlight, its fletching woven from iridescent spider silk that whispers against the wind. Nocked and loosed, it buries its barbed obsidian tip into flesh or wood, where thorny veins of arcane frost spiderweb outward, freezing spells in crystalline stasis. Magic within the struck target hardens into unyielding ice, shattering only when the arrow is withdrawn.