Arm Blades

You are able to manifest dangerously sharp blades from your arms.

• Increase your Strength or Dexterity score by 1, to a maximum of 20.
• You can use a bonus action to cause blades to come forth from(or return into) your arms. When doing so, you may choose to have only one arm or both arms to protrude a blade from a spot of your choosing. You are considered proficient in your arm blades and cannot be disarmed of them by any means. Depending on where your arm blades have been chosen to protrude from, you may still be able to use your hand to hold a shield or an item.

The arm blading feat’s damage is determined as if it were being used by a Small or Medium sized creature. The damage of the arm blade increases or decreases below and above these sizes. A tiny sized creature using an arm blade would deal 1d4 damage. A large sized creature would deal 1d8 damage. A huge sized creature would deal 1d10 damage, and a gargantuan sized creature would deal 1d12 damage. This should be taken into account for characters and NPCs that are able to change their size through magic or other means.