this skill is bugged becuase it almost never bluff,and it is called power bluff. this skill is working as a stun with bluff chance but skill description said: reveals enemy's back by 3 senconds,stun and stop him from targeting. of thouse effects the skill does this: stun for 3 seconds,and sometimes reveals enemy's back. the skill descrption doesn't said that this is a stun with chance of reveals enemeys back. the skill called bluff almost never does that effect,at the least the 3rd class buff works correctly. this is an important bug that should be corrected my innova team as soon as they can.