Armor Class 14 (armor scraps)
Hit Points 102 (12d12 + 24)
Speed 40 ft.
Damage Immunities cold, poison
Condition Immunities exhaustion, poisoned
Senses darkvision 60 ft., passive Perception 9
Languages understands Giant but can't speak
Challenge 6
Unusual Nature. The skeleton doesn't require air, food, drink, or sleep.
Multiattack. The skeleton makes two greataxe attacks.
Greataxe. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 25 (3d12 + 6) slashing damage.
Freezing Stare. The skeleton targets one creature it can see within 60 feet of it. The target must succeed on a DC 13 Constitution saving throw or take 35 (10d6) cold damage and be paralyzed until the end of its next turn.
IDRotF, p. 288