I've looked all over the forums and can't find my answer. Could someone tell me what the different colored buff rings in the higher level dungeons do? I know the ones with Gurgox and OL give some amount of armor for us mages but that's about it. I don't know how long they last either. And does it make any difference to pick up 2 rings or more?

Usually we are in the midst of a frantic fight so am not able to check my stats once picking up a ring.

Also, as a mage when in groups I avoid the rings, partly because I don't really know what they do lol, and the other part being are there any kinds of unspoken rules about leaving the rings for certain classes, ie maybe the birds need the blue ones, etc?

Thanks in advance for any help with this