My initial thought, on reading the product blurb, was along the lines of "you have got to be kidding me... you're telling me that the evil mage queen can use the power of the soul of her unborn child to... oh, man, I do NOT want to go there..." [Yeah, was looking at the BoVD earlier today.]
And then, I thought, "hey waitaminute... unborn souls?? DEAD SOULS?!? Souls don't die -- bodies die, the soul goes on...."
This is either gonna be some really scary stuff, or WoTC's really scraping the bottom of the barrel... or both.
And it's now officially at the printers.