is it possible to make a AoE spell which changes damage type

is it possible to make a AoE spell which changes damage type

ok preety much all in the title, im trying to make a spell which changes all allies attach type to hero for a duration...

im trying to avoid giving all the units a 2nd attack type and setting it to that.. thats just annoying..

is there anyway to do this using triggers?

i don't think it's possible, unless you replace the unit with another unit with a different ATTACK (not ATTACH) type.

serious?... d**mn so much for my heroic courage skill... ok thanks anyway.