Affliction Warlocks are the masters of slow kills, and agonizing drains. With spells like Siphon Life and Drain Life, they can slowly but steadily bring down an enemy, while feeding on its suffering and death. And utilizing abilities such as Fears and Drains properly allows them to take on several enemies at once, or handle single enemies extremely efficiently. And with extremely high mobility and a seemingly endless bag of tricks, they can be some of the most fun farmers in the game, and easily the most efficient.