You point a finger at a target in range. Your magic grants you a brief insight into the target's defenses. If the next attack you make against the target would miss, it hits instead, but the target takes only half the damage rolled. Furthermore, this attack is considered a critical hit on a roll of 19 or 20.

At Higher Levels: At 5th, 11th, and 17th level, the critical hit range of the attack increases by one, requiring a roll of at least 18, 17, or 16 respectively.