Large Monstrosity
Armor Class 12
Hit Points 136 (16d10+48)
Speed walk +40, climb +40
Challenge 4
Skills stealth +3, perception +3
Damage Immunities cold
Senses passive Perception 13
Languages Yeti
Camouflage. The yeti has advantage on Stealth checks made to hide in snowy terrain.
Fire Fear. When the yeti takes fire damage, it is rattled until the end of its next turn.
Storm Sight. The yetis vision is not obscured by weather conditions.
Multiattack. The yeti uses Chilling Gaze and makes two claw attacks.
Claw. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 9 (2d4 + 4) slashing damage.
Chilling Gaze (Gaze). One creature within 30 feet that is not immune to cold damage makes a DC 13 Constitution saving throw. On a failure the creature takes 10 (3d6) cold damage and is paralyzed for 1 minute. It repeats the saving throw at the end of each of its turns ending the effect on a success. If a creatures saving throw is successful or the effect ends for it it is immune to any Chilling Gaze for 24 hours.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open