Mmore

On Dark Shaman you can Hand of Protection players (or yourself) who get stuck to get through the wall, they'll be immune to the melee hits from it.

In regards to Holy Prism / Light's Hammer I'd say that on Norushen you can use either one. I like to take Light's Hammer because I love how the spell works and because we're pretty much stacked the entire time anyway. Holy Prism probably works better if your raid group tends to be more spread out. One thing I take into consideration here is that this fight gets a lot harder towards the end. For the burn phase you'll usually all stack and Light's Hammer feels a lot stronger there. Everyone is constantly taking damage (so it's constantly healing) and it also shield's everyone every 2 seconds. So

Can take Clemency on The Fallen Protectors to get rid of Garotte, a DoT with unlimited time that has been put on random raid members. This is perfect to keep it off healers and ranged DPS and will help a lot with the overall damage going on.