Large Dragon (Chromatic), Chaotic Evil
Armor Class 17 Initiative +3 (13) Hit Points 123 (13d10 + 52) Speed 40 ft., Burrow 20 ft., Fly 80 ft., Swim 40 ft.
Saving Throws Str +4, Dex +3, Con +4, Int −2, Wis +3, Cha +1
Skills Perception +6, Stealth +3
Damage Immunities Cold
Senses Blindsight 30 ft., Darkvision 120 ft.; Passive Perception 16
Languages Common, Draconic
Challenge Rating 6
The dragon 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 movement.
The dragon makes three Rend attacks.
Melee Attack Roll: +7, reach 10 ft. Hit: 9 (2d4 + 4) Slashing damage plus 2 (1d4) Cold damage.
Constitution Saving Throw: DC 15, each creature in a 30-foot Cone. Failure: 40 (9d8) Cold damage. Success: Half damage.