Armour of the the Tundra Range

AC: 12 + Dex modifier
When attuned to this you have resistance
to cold damage
Boreal winds: As an action (once per long rest)
you can extend your palm to face your enemy
and unleash freezing wind in a 12ft cone. all in the
area must make a STR DC: 15 or take 1d8 cold
damage and be pushed 5ft backwards.