This skill synergizes well with Sight Beyond Sight. The two skills rest in the same Spawning Power attribute line, as well as Sight Beyond Sight acting as a good cover enchantment and negating blind.
For a weapon spell that you can keep up constantly, at a low cost, consider Vital Weapon. Another option, if you prefer to be able to deal more damage, is Weapon of Aggression.
Consider going Assassin secondary and using a dagger combo to unleash a hefty amount of damage, as daggers can hit more often than any other weapon because they can double strike.