Buffs
To keep this short the armor an affliction warlock wants to use is Fel Armor. It increases your spellpower and heals you when you do single target damage. Next thing we want to think about is turning Soul Link on, this will transfer an ammount of the damage you take to your active demon.
Last but not least we have Dark Intent, this spell we put on a friendly player. As you can see you and that player will both benefit from this spell. Question you will be asking now is "Who should I give Dark Intent?" Easy answer is a class that has DOTS. Long answer is the following: For a start consider who in your group will need the buff. Wow is about teamwork so ask around...maybe some healer really needs the haste. If nobody is in desperate need of the buff (you will see if you ask everybody will be in need and ppl will try to bribe or pay you for it) there is a quick list that can help you to get most out of it yourself.
Best healers ot put it on will be:
- Restoration Druid
- Holy Priest
- Restoration Shaman
- Shadow Priest
- A Dps-ing Druid
- Any other class that works with Dots.
Pets aka Demons