Unless you're in a raiding guild. Forget it.
If you are high enough level to go get this spell with a couple of your friends, you don't need it.
If your guild is organized enough to be raiding Qvic, chances are (again) that you skipped this spell and are already on to better spells.
Generally speaking, a cleric's job in a group or raid is *mostly* not to nuke (barring those long nights kiting the Hive with wizzies lol).
Don't divert your critter's career to get this spell.