The arrow's shaft gleams with etched runes that pulse like slowing veins of frost, its fletching woven from petrified spider silk that whispers against the wind. Upon impact, it burrows deep, releasing a shimmering haze that thickens the air into viscous strands, binding motion in rippling waves of glacial blue. Limbs grow leaden, steps drag through invisible tar, as the field expands in a creeping radius of chilled stagnation.