Just finished this 13(!) part quest last night...finally involved killing a level 56 elite Fire Elemental that has a shield that makes it invunerable to all attacks and knocks you back (frequently into almost insta death lava)
You get a rod that has to be held off hand and can be used to dispell his shield for 30 seconds or so before it comes back.... and no you cant spam the dispell..you have to wait for the shield to come back to dispell again.
Hits for 400 crits for 800 and has an AE fire blast that can do upwards of 1000 damage.
One of the rewards..
Also get a choice between the Master Sword (haha!) and a nifty offhand item that reduces all mana cost of spells by 25.
Linken even had a green cap on and was short....lol!