So I plan to play my warlock for MoP so I was looking through the new talents and stuff to see which spec might be best. I noticed the level 90 talent, Kil'Jaeden's Cunning, might be really good for affliction.
The spell "Malefic Grasp" deals damage over 3 seconds (casting it again before the time is up adds 3 seconds to the channel time. stacks up to 5 times) and is channeled but the key to this combo is that while your target is affected my Malefic Grasp "all of your periodic spells tick 100% faster". Now, Kil'Jaeden's Grasp says that you can cast and channel while moving but doing so "doubles the cast time or period of the spell". Yes, this does affect the damage that Malefic Grasp does over time which is a minus but if i'm reading it right I don't think it would affect the "all of your periodic spells tick 100% faster" part because that is just a static affect that happens as long as the target is being affected by Malefic Grasp. Not only that, but Kil'Jaeden's Cunning doubles the channel time of Malefic Grasp which could also be a blessing in disguise.
In short, will the affliction rotation just be
1) dot boss up.
2) cast Malefic Grasp 4 times (channel the 5th) so it stacks to a 15 second channel but double the time b/c of Kil'Jaeden's Cunning = 30 second channel.
3) run around like an idiot for ~30 seconds while benefiting from double damage dots.
4) repeat 1-3