Post#6 » Fri Jan 31, 2014 4:11 am
Yup. Certain raid targets are balanced around their being slowable. You can do them without slow, but if you're just breaking the tier that slow is mighty helpful. And shammy buffs are supreme. If you can only box one healer, cleric is still probably the best choice, but shammys are a great addition for patch heals+buffs+ the occasional slow.
As for bots, I think they *do* cast slow, but not very reliably at all. From what I remember, they cycle through tasks pretty randomly, and I believe they always take healing as the main priority, so if your HP is fluctuating during a fight he'll probably never cast a detrimental spell.