[If anyone else wants to post class guides on here from things they're picking up in Karazhan and would like to share with the guild, drop me a message on the forum and we can sort it out :)]

Well we visited Karazhan last night and it was my first time. It quickly became clear that I have to work for a living now; no more just standing at the back and healing. I have crowd control duties now, as the place is crawling with undead. I’ve never really used the shackle undead spell before, so had to get learning very quickly. I’d already setup a macro (which I’ll come back to later), which was a big help once I got going.

What I learnt as we went along is that I can’t wait for the shackle to break and then reshackle, as then chaos ensues! So every 10 seconds or so, once the tanks were topped up and with renews ticking I’d quickly reshackle my mob to prevent it from breaking. Seemed to work ok for the most part doing it that way - the macro helped a lot with that as well. I picked up the following macro, which cleverly means that once I have shackled something, I can keep the tank targetted, and repressing the shackle macro button will reshackle, without taking my target away from the tank. Very handy.

/clearfocus [modifier:alt][target=focus,dead][target=focus,help][target=focus,noexists]
/focus [target=focus,noexists]
/cast [target=focus]Shackle Undead

Egotistical Priest has a great post all about shackle undead which is well worth a read, for priests and non-priests alike. The Ego version of the macro is slightly different but I think does pretty much the same thing, I may have to try it out later:

/clearfocus [modifier:shift]
/clearfocus [target=focus,dead]
/clearfocus [target=focus,noexists]
/focus [target=focus,noexists]
/cast [target=focus] Shackle Undead

Ego’s note to other classes is also worth a mention:

If we have been assigned a mob to shackle, please do not break the shackle. Do not hit, stun, AOE near, or even spit on its foot (assuming it has a foot). We?ve got this one covered. If we miscalculate and shackle breaks early, remember that we have no way of knowing WHEN it will break. It could break one second into being shackled. One thing we can promise is that if shackle breaks early and we’re not in the middle of a heal, we’ll be reshackling that mob as quickly as we can. Don’t touch it, and for the love of all that is holy, do not DoT it. If you cast a DoT on my shackled mob, I will be quite wroth with you.

Also I mostly forgot to take screenshots, but here’s one below that I managed to grab of our intrepid adventurers (click for larger version).