I know this has been talked about in previous threads, but I don't think a satisfactory answer has ever been achieved, so I'm going to check in on this for a bit.

Basically, my 10-man is going to be looking at downing Loatheb after I can drop Heigan (long story for another time), and my consideration is that it would be beneficial to get rotating Power Word: Shield circulating over the entire raid. Now, granted, there is some 3.1 thought going in to this, and with the current cooldown I can't get everyone covered. Ideally, with 3.1, I can grab improved PW: S to reduce the Cooldown and get this to work.

Anywho, my speculation goes as thus:

/cast [target=raid] Power Word: Shield

Would this sequence through the raid casting PW: S, or not? If not, has anyone managed to develop a macro that does so?