Joint Lock

Description
You've learned the art of the joint lock, a technique used universally in nearly all martial arts and combat sports. You know how to force someone to extend parts of their body beyond their natural range of motion. You can force a joint enough to hurt severely, or enough to cause permanent damage.

Effects
You can only use Joint Lock while Grappling an enemy by an arm or leg, and using Joint Lock causes your turn to end. When you use Joint Lock, you spend 4 Stamina and 1 AP. You may:
 * Inflict the In Agony condition, inflicting it again on each turn you keep the enemy in a joint lock. They remain In Agony until you let go.
 * Attempt to snap the joint, rolling your PHY against the enemy's VIG. If you succeed, the grappled limb becomes Crippled and takes damage equal to half of its total maximum HP. You cannot cripple a limb that is already crippled.