so i just pugged normal lich king 10 as the shambler tank. raidleader asked for tactics for everyone, my gear was decent enough (although i had a blue trinket, essence of gossamer, since GoI was nerfed to the ground) and i explained that though i did not have the achievement, i did know tactics from 4 different sources (wowhead, wowwiki, tankspot and ryutarou). so i got invited. raid setup was resto shaman, holy priest, resto druid, mage, shadowpriest, warlock, ret paladin, prot warrior, prot paladin (me) and ele shaman.
attempt 1: small adds spawn, i pull some on me with avenger's shield. first big one spawns, i taunt it when it crawls out of the ground, melee cleaves it, i can grab it with use of judgement and CS. no big issues, until i get necrotic plague on me. it's not dispelled. i die, adds roam free, i get battle rezzed, but too little too late. we wipe. i was expecting the holy priest to cleanse. was this wrong?
attempt 2: we get past necrotic plague. once we get to phase 2, i have difficulty picking up the 2nd and 3rd raging spirit. all 3 are on the MT once the platform topples. i try to get them off him for a while. val'kyr spawns, picks up our ele shaman and drops him off the edge. people weren't standing in the center. a few seconds later, when people are standing in the center, defile spawns. i didn't know where it would land. a few moments later, i know. smack dab in the center of the platform, with 3 people in it. it grows to the entire platform. wipe again. could i have helped this?
attempt 3: first shambler spawns. a few moments later, our MT loses aggro and the lich king starts wailing on the ranged. 2 of our healers died to necrotic plague. MT dies.
after this, the raid fell apart. only boss left was LK, and i wasn't saved to the instance either. i'm wondering how there is anything i could have done in any of these attempts.