The most expensive, but quite rewarding item from the Crystal series called Crsytal Myth. My tip is: When Mages on the Lane [particular Skaarf and Celeste] you should after your first item [Here I recommend something with Mana Regeneration] immediately bodybuilding Crystal Myth. It gives you 10% Schild Piercing and 70 crystal power. The point is: The Passive amplifies your crystal damage by -10%