I'm kind of confused as to the usage of coup de grace. Is the usage of a coup de grace basically limited to when a power, such as the wizard's sleep spell or a non-lethal hit (the player declares the creature was knocked unconscious)has rendered the target helpless?
Lots of situations for a coup de grace in D&D...
- A spell or power has rendered the target unconscious.
- The target is out of hit points but isn't (sufficiently) negative and so isn't dead. Yet.
- the target is held tightly bound by chains, ropes, strangle vines, webs or some other form of binding.
- the target is asleep. (Can we say, "Assassination"?)
- the target is deeply engrossed in some other activity that isn't physical (perhaps due to a spell, perhaps not)