So, mage alt is close to 4 tier ten and I was messing around with my gear to see if I should break the set early, as I could use the hit from one of the pieces I haven't bought yet (was planning to buy 2 at a time). Anyways, I discovered that after putting up my molten armor, and removing a piece that gave me the bonus, I still received the bonus crit, so I can equip two pieces for the bonus, use the molten armor, then switch to my better gear and still retain the extra crit. Is this a known bug, or just a tooltip error? Granted, not a huge buff considering the lack of spirit on ICC gear anyway, just though I'd see if this was an error or not.