Skeletal ClawWeapon 9
Source Pathfinder #183: Field of Maidens
Damage 1d4 Slashing
Type Martial
Price 1,250 gp
Weight light
This +1 striking tekko-kagi resembles a clawed skeletal hand that fits over your own. Embedded in the back of the bony hand is an onyx gemstone held in place by fine silver chains. When the claws tear into a living creature, the gem pulses with negative energy. The skeletal claw deals an additional 1d4 Persistent negative Damage to living creatures (1d10 Persistent negative Damage on a critical hit).
Activate 
command
Frequency once per day
Trigger You cast a spell to summon an undead creature that has a skeletal structure, such as with Animate Dead
Effect The triggering undead creature has 10 temporary Hit Points that last for 1 minute. As long as any of these temporary Hit Points remain, the skeletal claw doesn't deal additional negative damage.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
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.
DisarmYou can use this weapon to Disarm with the Athletics skill even if you don't have a free hand. This uses the weapon's reach (if different from your own) and adds the weapon's item bonus to attack rolls (if any) as an item bonus to the Athletics check. If you critically fail a check to Disarm using the weapon, you can drop the weapon to take the effects of a failure instead of a critical failure. On a critical success, you still need a free hand if you want to take the item.
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.
ParryThis weapon can be used defensively to block attacks. While wielding this weapon, if your proficiency with it is trained or better, you can spend an Interact action to position your weapon defensively, gaining a +1 circumstance bonus to AC until the start of your next turn.
TripYou can use this weapon to Trip with the Athletics skill even if you don't have a free hand. This uses the weapon's reach (if different from your own) and adds the weapon's item bonus to attack rolls as an item bonus to the Athletics check. If you critically fail a check to Trip using the weapon, you can drop the weapon to take the effects of a failure instead of a critical failure.
NecromancyEffects and magic items with this trait are associated with the necromancy school of magic, typically involving forces of life and death.
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.