I don't know a thing about casting focus. I've read about it, but I've played uo a long time & never known anything with a 12-17% max to be all that helpful. Would someone that uses it give me some insight? Is it really helpful, sorta helpful, or a bad thing to include when making suits of armor? I made a guy a suit today with Protector of Battle Mage, Arcane Crown and Tangle and it was sort of interesting to me. What do you guys think about it?