Ice Walk. The skeleton can move across and climb icy surfaces without needing to make an ability check. Additionally, difficult terrain composed of ice or snow doesn't cost it extra moment.
Shatter. When the skeleton is reduced to 0 hit points, it shatters in an explosion of jagged ice. Each creature within 10 feet of it must make a DC 15 Dexterity saving throw or take 7 (2d6) piercing damage and 7 (2d6) cold damage on a failed save, or half as much on a successful one.
Snow Sight. The skeleton is able to see clearly through an area obscured by snow or ice.
Multiattack. The skeleton makes two shortsword attacks.
Shortsword. Melee Weapon Attack: +4 , to hit, reach 5 ft. one target. Hit: 5 (1d6 + 2) slashing damage plus 7 (1d4) cold damage.
Description
The crystal skeleton is covered in ice crystals.