Plate of the White Wyrm

Armor (plate), legendary (requires attunement)

These frozen plates of armor are infused with the power of an ancient white dragon. While wearing this armor you gain a +2 bonus to AC and are resistant to cold damage. As an action you can breathe a 30- foot cone of cold. Creatures in the cone must make a DC 18 Dexterity saving throw, taking 6d6 cold damage on a failed save, or half as much on a successful one.

You must complete a short or long rest before you can breathe cold using this armor again.