Skeleton KeyEquipment 5
Source Pathfinder Core Rulebook
Price 125 gp
Weight negligible
A grinning skull tops the bow of this macabre key. This key can be used in place of thieves' tools when attempting to Pick a Lock, and it grants a +1 item bonus to the Thievery check.
If the skeleton key becomes broken due to a critical failure on the check, it works as normal thieves' tools and loses its benefits until repaired.
Activate 
Interact
Frequency once per day
Trigger You attempt to Pick a Lock but haven't rolled yet
Effect The key casts Knock on the lock you're trying to pick.
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.
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.
TransmutationEffects and magic items with this trait are associated with the transmutation school of magic, typically changing something's form.