Originally Posted by
Grose
It's takes some time to get down, but it's pretty easy to trivialize the encounter with Anti-Magic Shell.
About a second or two before Gastric Bloat comes off of cooldown, just use AMS and the stacks of Gastric Bloat should fall right off. Make sure that Festergut isn't going to cast Inhale Blight before he applies Gatric Bloat, I've made the mistake of using AMS too early and not paying attention to timers, which usually causes me to die once every other week or so.
Make sure you have a Plague Scientist with you as well, as he has a buff he can channel to give you 100% more damage. With the extra damage from this guy )
(or if you have good gear such as my DK,) AMS early and reset the stacks before 8-9 so that even if you mess up the timing you'll still have one more opportunity to use AMS before you die.
This should be all you need to know! I have Heroic LK and most of the instance on farm on Heroic 25, so if you have any questions at all about ICC or soloing in general, feel free to post here or PM me.