[thejeff]

I'm not saying that's not possible, but I don't recall it and I've never seen it.
For a long time it wasn't understood exactly why self-blessing sometimes didn't work.
I remember the suggestions for a self-bless spell, but those were in response to this problem since it can't always be avoided: Dai Onis and other summoning creatures, flying enemies, etc.

It wouldn't be a bad idea, now that there are spell slots to spare.