Once per encounter, unarmed combatants can size up an opponent by making an opposed Perception versus Deception or Cool check as an action to identify weaknesses. This might reveal bad technique or form, or an injury or vulnerability that the character can exploit.
Success - Evaluate Target: Character becomes aware of an injury or weakness and may add one success to any unarmed combat check once against the opponent.
Advantage - Spot Weakness: Add Vicious +1 to the next
critical injury this character inflicts against the
target.
Failure - Fooled: The target tricks the character, faking
a weakness. Add one failure to your next unarmed attack.