Ice Shackles

Shards of glacial energy spiral into form around the target’s limbs, binding them in frostbitten manacles of solid ice. The target must succeed on a Normal STR save or become immobilized and take 6 Frost damage per phase for 3 phases, or until the shackles are shattered. On a successful save, the target is slowed for 3 phases instead and takes 3 Frost damage. An immobilized target may reattempt the saving throw at the end of each of their turns. A creature adjacent to the target may spend a full-round action to break the ice and end the effect. If the target takes Fire damage while immobilized, the shackles are immediately melted and the effect ends.