Also...
Beguiling Curse
Prerequisite: 11th level, warlock
Benefit: Whenever you hit an enemy under your
Warlock’s Curse with a warlock power, you can forgo
dealing curse damage to instead compel the target to
make a melee basic attack against an adjacent creature
you choose.
Do you have to be able to deal curse damage in order to use this? Cause the arguement can be made that you hit a couple of people cursed by you and go "nope, no extra damage for you, hit him instead" for each person hit.
"You decide whether to apply the extra damage after making the damage roll. You can deal this extra damage once per round, so if you have dealt Warlock’s Curse damage since the start of your turn, you cannot deal it again until the start of your next turn."