Starting from a post by Altosis on Warlock Raiding Tips (threat pulling, damage coefficients, spec advice), I have a few more general comments to make about Warlock play style, which goes beyond the raid.
(a) Don’t put DoTs on creatures that have a Aggro reset, or you end up dead. If you have to, then make sure you know that your DoT is gone before the reset. This happens a lot in raids, so get used to hearing and regretting the line “stop dps”.
Mobs such as:
– Attumen when he jumps on Midnight’s back. Give the tank plenty of agro time, and then burn him down.
– The Undead huge skeletons in Kara just after Maiden.In particular their threat table is such that you want to be at worst 3rd on it. Do not go higher or you’ll get smashed. For them 2nd place on threat equals dead.
– The Ogre trash in Gruul’s Lair.
I have died more times that I care to mention because I didn’t realise that my DoT was ticking during an aggro reset.
(b) Dead = Zero DPS. This is an extension of the point above, but has far more ranging applications. Survival allows you to help and do more damage; and also shows that you know the fights.
(c) Curse of Elements is Awesome, for a lot of people, not just Warlocks. Help everyone with damage, not just your Curse of Doom or Agony. This applies when you have other casters who can get he benefit, especially if their gear is better than yours (shocked!).
(d) Summon those guys who get lost. Its so much faster than waiting for them to run, or get help, and only costs 1 shard. In fact don’t be affraid to use shards, as hording them is pointless. I try to finish a run with about 5-10 spare. That means the last few bosses are getting Shadowburnt all the time.
(e) Get shards from all the trash you can, and stop when your bags are almost full.
(f) Play the spec you like; period. If I have to watch a new Ret pally gear up through kara I don’t want to hear about how Demo or Destro is not viable at low +SpDam. Ignore the Leets, play your way. True for any class, and especially Warlocks.
(g) Use your Soulstones and Healthstones all the time. In raiding it goes without saying that you should be doing this all the time, but do not ignore this when soloing, etc. It helps, makes recovery faster, and keeps you in the habit.