Jul 15th 2009 3:12PM Ancient Water Spirit charging knockdowns introduce a large RNG component to successfully killing the tri-spawn. In addition to being stunable, all of the adds are now interruptable and silenceable.
As a warrior tank, I have a lot of success using a combination of two macros to interrupt AWS whether it's my target or my focus.
This macro sets my target and focus and in a single keystroke and lets me focus on building threat asap without worrying about sorting out targets.
#showtooltip shield bash
/cast [modifier:shift, target=focus] shield bash
/cast [nomodifier] shield bash
Macro button replaces my former keybinding for shield bash. This makes it easy to keep two targets locked out as a prot warrior.
For other classes, replace "shield bash" with your interrupt effect and you're good to go. The second macro is very versatile! Impress your guild by not letting a single Yogg-Saron add AE shadowbolt while you lock down two targets!