From Pathfinder Core Rulebook, which isn't enabled.

Frost Brand

ITEM 16

COLD MAGICAL VERSATILE-P

Price 10000 gp

Usage held in 2 hands

Bulk 2

Category martial

Group sword

Damage 1d12 slashing

The blade of this +2 greater striking Frost (Greater) greatsword appears to be nothing but icy shards. The frost brand automatically extinguishes non-magical fires in a 20-foot emanation. While wielding it, you gain fire resistance 5.

Activate command, Interact

Effect You swing the frost brand into the area of an ongoing magical fire, and the blade attempts to counteract the fire with a counteract modifier of +27. If it fails, it can't attempt to counteract the same fire again.

Pathfinder Core RulebookOGL