various questions
 

a)there is a way to give airshield to an unit(not commander)?
b)armor of virtue has "bless even if not holy" spell.
How can i give this effect to another item? if it's not possible, can i give it to another weapon/armor?
c)is it possible to give a command, similar to #onebattlespell, to an item? If it is, can i give that item to a unit via #armor/weapon?

Re: various questions
 

a) No. There are no units in the game which have airshield without casting a spell, so it's not available as a thing to copy.
b) No. But you could give a commander #onebattlespell "Bless", claim in his description that it comes from his armour, and remove his Body slot so that his armour can't be changed.
c) No. Item modding is very limited. But you can fudge a solution like the one I give for Bless above.

Sorry!

Re: various questions
 

ok.
is it possible to make somehing like that
#selectitem "shroud of battle saints"
#name "newname"
#type 6
#end
even if it's amagic armor and then give it to a unit with #armor command?

Re: various questions
 

No, you're confusing armor with magic items that give armor.

The armor itself doesn't give the bless effect. The magic item "Shroud of the Battle Saint" gives the bless effect AND the "Shroud of the Battle Saint" armor.

If you assign the armor "Shroud of the Battle Saint" to a unit, it will not receive the bless effect, but it will have an 8 protection 0 encumbrance body armor named "Shroud of the Battle Saint".

Re: various questions
 

There is a way to assign magic item to an unit?

Re: various questions
 

For game mods, no. Sorry. :(

Using map modding, yes, you can assign a commander unit to a province and give them items.