Focused Ki Strike

You focus your ki and are able to predict your opponent's actions, bypassing their defenses.  Inevitably, your next strike will hit. You gain the following benefit. 

• Before you make a melee attack, you can choose to spend a ki point to boost your next attack roll by +5. If your attack hits, the target receives a -2 penalty to the next saving throw it makes until the end of your current turn.