Linnorm, Ice

Curse of Frost (cold, curse, primal) When a creature slays an ice linnorm, it must succeed at a DC 40 Will save or permanently gain weakness to cold 15.

Breath Weapon [two-actions] (cold, evocation, primal) The ice linnorm spews out a blast of freezing, viscous ooze in a 60-foot cone that deals 15d6 cold damage to creatures within the area (DC 38 basic Reflex save). The freezing ooze clings to those struck and hardens into thick sheets of ice. A creature that fails the saving throw is immobilized by the ice until it succeeds at a check to Escape or it or an ally Forces Open the ice (DC 34 for either case). At the start of its turn, a creature still immobilized by the ice takes 4d6 cold damage. Another creature can free a frozen target by dealing a total of 20 fire damage to the frozen target. Left unattended, the ice crumbles away in 1 minute on its own. Creatures with the fire trait can’t be frozen in place by this breath weapon. Flying creatures fall if frozen, and swimming creatures that are frozen rise toward the surface of the water at a speed of 60 feet per round. An ice linnorm can’t use Breath Weapon again for 1d4 rounds.

Constrict [one-action] 2d6+18 bludgeoning, DC 38

Ice Linnorm Venom (cold, injury, poison); Saving Throw DC 38 Fortitude; Maximum Duration 10 rounds; Stage 1 5d6 cold damage and drained 1; Stage 2 7d6 cold damage and drained 2.