Alpine Guide (1/day): You can use your reaction to sound a short note on this horn. All creatures of your choice within 100ft. that can hear you gain Cold resistance and advantage on constitution saving throws until the end of your next turn.
Blizzard Brawl (1/day): As an action you may sound a long note on this horn, causing ice cold winds to blast from it. All creatures in a 30ft. cone make a constitution throw equal to 8+ your Constitution modifier + your proficiency modifier. On a failed save they take 4d8 Cold damage and are Deafened until the end of their next turn. On a successful save they only take half damage.
Damage: (2d6+1) slashing
Properties: Heavy, Two-Handed
Mastercrafted: You gain a +1 bonus to attack rolls and damage rolls made with Ingvar's Restored Greatsword.
Whirling Strike: Whenever you make an attack with Ingvar's Restored Greatsword you can attempt to hit all creatures within a 5ft. range of you. If you do roll one attack roll and one damage for all creatures within range. Afterwards make a Constitution saving throw equal to 6 + twice the number of times you used this feature on subsequent turns. On a failed save you suffer a point of exhaustion.