There is a Legacy version
here.
SaiUncommon Agile Disarm Finesse Monk Versatile B Source Player Core pg. 278 2.0PFS Note For the purposes of Pathfinder Society play, choosing the following region as a Home Region (or with the World Traveler boon) grants access this item: Jinin, Minkai, Shokuro
Price 6 sp;
Damage 1d4 P;
Bulk L
Hands 1
Type Melee;
Category Martial;
Group Knife
This piercing dagger is a metal spike flanked by a pair of prongs that can be used to trap an enemy's weapon.
Traits
Agile: The 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.
Disarm: You 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.
Finesse: You 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.
Monk: Abilities with this trait are from the monk class. A weapon with this trait is primarily used by monks.
Uncommon: 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.
Versatile B: A 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.
Critical Specialization Effects
Source Core Rulebook pg. 283 4.0Certain feats, class features, weapon runes, and other effects can grant you additional benefits when you make a Strike with certain weapons and get a critical success. This is called a critical specialization effect. The exact effect depends on which weapon group your weapon belongs to, as listed below. You can always decide not to add the critical specialization effect of your weapon.
Knife: The target takes 1d6
persistent bleed damage. You gain an item bonus to this bleed damage equal to the weapon's item bonus to attack rolls.