Frost BrandWeapon 16
Source Pathfinder Core Rulebook
Damage 1d12 Slashing
Type Martial
Price 10,000 gp
Weight 2 bulk
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.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ColdEffects with this trait deal cold damage. Creatures with this trait have a connection to magical cold.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
VersatileA versatile weapon can be used to deal a different type of damage than that listed in the Damage entry. This trait indicates the alternate damage type. For instance, a piercing weapon that is versatile S can be used to deal piercing or slashing damage. You choose the damage type each time you make an attack.