Gloom BladeWeapon 9
Source Pathfinder GM Core
Damage 1d6 Piercing
Type Martial
Price 700 gp
Weight light
As black as coal, this blade grows more potent in darkness. While in bright light, it functions as a +1 shortsword and doesn't appear to radiate a magic aura to Detect Magic or similar spells unless the spells are 4th rank or higher.
In dim light or darkness, the gloom blade becomes a +2 striking shortsword. Whenever you use the gloom blade to attack a creature you're undetected by, you deal 1d6 additional precision damage.
To upgrade the gloom blade's fundamental runes, start with the base +1 shortsword, but if you improve it beyond a +2 striking shortsword, the runes apply in dim light or darkness as well.
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.
AgileThe multiple attack penalty you take with this weapon on the second attack on your turn is -4 instead of -5, and -8 instead of -10 on the third and subsequent attacks in the turn.
FinesseYou can use your Dexterity modifier instead of your Strength modifier on attack rolls using this melee weapon. You still use your Strength modifier when calculating damage.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition 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.