Norushen LFR Guide - The Siege of Orgrimmar Vale of Eternal Sorrows

Norushen LFR
This boss should be quite managable on LFR mode.  First theere is a mechanic called corruption. You start with 75. When you clear it you gain a buff called purifed which increases damage done to the boss, healing done etc. Its cleared by going into a "test phase". This is done seemingly at random - ie you will be ported into it. More on that later.
Main Fight
Tanks should swap on Self Doubt as it increases damage taken by the bosses main nuke by 40%. He also does Blind Hatred which will spin around the room durumu style. Dont stand in it as it does 60k dps. He will constantly do raid damage via Icy Fear during the fight. This damage increases over time as his hp decreases and is something for the healers to heal up.
There are 2 kinds of adds. These spawn when their equivlient in the dps test phase are killed.
There are big adds and small ones. The big ones must be nuked. Once killed they drop a void zone that does 30k dps to the whole raid. You can avoid this by having a player stand in it and soak it. This will gain them 25% corruption.
The small adds will use a spell that buffs the boss so you need to kill them and stand inbetween their buff spell and the boss.

Now lets talk test phases. There is one for each role. Completing it will zero your corruption. In the dps one you face small adds and a large one. Simply kill them all, avoiding the cone from the large add. Healers have firendly npcs and a hostile. Heal and dispell the friendlies and do damage to the hostile. Tanks will have to survive against an add for 1 min. It does an aoe cone and some unavoidable nukes. It does Hurl Corruption which does 110k damage unless its interrupted.

Once he hits 50% hp he will summon a large add every 10%. you want to nuke all adds you see, have tank/healers soack the void zones and kill the boss.