[Turin]

If you have really awesome mages, who you need for crucial spells it makes sense to equip them.
for example a caelum high seraph with air 4 water 2, equipped with:
staff of elemental mastery(fire resistance),
dragon helmet,
100% lighning resist armor
boots of the messenger
bag of winds
amulet of antimagic

is pretty hard to kill, so you can be sure that your army gets that fog warriors buff.