Insightful Stroke

Insightful Stroke (Divination)
Level: Mage 3, Planning 4, Twilight Huntsman 3
Mana: 10. Long duration. Base Success: 90%.
Casting this spell reveals the hidden weaknesses of a target and the most perfect pattern of attack specific to a given target in a given instant, granting the caster a bonus to her next single physical attack's damage equal to her caster level plus her Wisdom modifier.