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.

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.

A creature with this trait is a member of the jotunborn ancestry. Jotunborn are large people forged from the blood of an ancient group of giants called titans and usually have low-light vision. An ability with this trait can be used or selected only by jotunborn. A weapon with this trait is created and used by jotunborn.

This weapon makes wide swinging attacks. When you attack with this weapon, you gain a +1 circumstance bonus to your attack roll if you already attempted to attack a different target this turn using this weapon.

A versatile weapon can be used to deal a different type of damage than its listed type. This trait indicates the alternate damage type. For instance, a piercing weapon with versatile S can deal piercing or slashing damage. You choose the damage type each time you attack.