Frostflinger
A gift from the Gift of Many Things to Falk after saving Santa and his workshop from Krampus.
To hit: DEX+Proficiency, Range: 30/120ft, Damage: Magical 1d12 piercing and 2d8 cold
Special effect: Frostbite; each time a creature is hit by the rifle they need to make a DC 17 CON save or lose 5ft of movement and if it become zero they are considered frozen and need to do a DC 15 STR save to break free. If they are hit the next turn or broken free, all charges are lost