Suffering

Suffering in cataclysm is now a one target taunt spell.

Suffering is one of the four Warlock's pet Voidwalker's spells.

Suffering is a taunt that allows a Voidwalker to generate threat on multiple enemies.

Suffering is on a 2-minute cooldown and, as with Torment, is a Shadow effect that can be resisted.

Tactics
This ability can be placed on auto-cast; like Torment, it will then be used whenever possible while in combat. Because of the long cooldown, putting the spell on auto-cast will usually guarantee that it's not available when you need it the most.

Although intended as AoE threat generation, it can also be cast manually against single targets for aggro-sensitive battles. It generates more threat than Torment.