Setup:

1xProt Paly, 1x CoH Priest, 3x Fire Mage

all lvl 66

Ok so every single instance I have faced so far has given me no problems (even did blood lord in ZG at 65). Shirrak the Dead Watcher though is kicking my a**. The best attempt so far has gotten him down to 75%. Problems I am facing:

200% casting debuff- Being a all caster team, this is brutal. Luckly my priest has very good gear for her level, and renews+shield can keep my tank alive. However my dps is nothing. I tried switching to arcane missles, but could just not DPS enough before the next problem which is

Attract Magic/Carnivorous Bite - This is what kills me every time. After he pulls my group to him, i'm trying desperatly to move them away (a spread out macro or simply backward) and putting renews on everyone (with xkeys its easy, but still time consuming). I have yet to survive this combo.

I thought about putting a PW Shield and renew up on my paladin, and then moving the boss away (im tanking him at the top of the stairs, team is at the bottom) to reset the casting debuff (it only has a 3-5 second timer and it does have a range check). I haven't tried this trick yet, but I will this weekend.

So are there any tips on avoiding the attract magic and the bite? Is there a different spec I could try on my mages? (Maybe full arcane?)

P.s. yes I know I could probably skip this instance, but i'm trying to complete every outland dungeon at the level suggested (been succesful so far)