[Agema]

Earth and nature is where it's at for Angels: regeneration is obviously useful, and reinvigoration because they do take fatigue. Earth is doubly useful because all your mages are sacred, so you get to reduce fatigue, and if (non-seraph) angels have a weakness, it's low protection, so that's also worth buffing a bit. However, they'll still be lethal enough with no bless at all. I've got a game running where I ignored bless completely, but otherwise I'd probably take something like E9N4.