[LDiCesare]

A9 looks like a real waste. W9 or S9, or W9S9 are much better. D9,F9,E4+,N4+ are also interesting, but Air is definitely not.

A9 will only help your warriors of the 5 elements if you send them alone against archers, and maybe a little bit your demons of heavenly fires. W9 will help your demons of heavenly waters and celestial soldiers. S9,E4+ will help all, including your mages. N4+ will help your demons and celestial soldiers.

I never have had problems with archers when playing EA TC. Just don't send your warriors of the 5 elements against archers. You have tons of tower-shield equipped troops to suck arrow fire, so the Wot5E should never be in any danger of these, so an air bless is a total waste of points in my opinion.
Of course, if you back your warriors with your own archers, you may get some collateral damage. There's an easy solution to that: Don't do it, or use aim.