For those of you who have used it, what's your opinion of it's usefulness? At first glance it seems fairly weak - you have no idea what ray is going to hit the target, which means you don't get to choose which save to go against (one of a spellcaster's biggest strengths). You might end up with some pretty insignificant damage for the cost of a 7th level spell. Of course, there's also a chance it can kill the enemy - but Finger of Death does that too, and it's also 7th level.
Opinions?
Opinions?