This isn't a bad idea. In my hack I merged it with Libra, in battle it has Libra's effect, out of battle it's Sight. Making it heal darkness was my first idea, I wanted to free up a few spell slots for more useful things though. I can make a hack with the darkness healing property later.
What animation does it use when reflected? I don't think it has any animation set when it's cast in battle, I could be wrong though, haven't looked at the data in a few months.
By the way, you spelled my name wrong.