Ok, if i have an ability that makes a unit use mirror image, and make it do 50% of the Heroes damage, will spells also do 50%? Or is it only normal damage?
No, the damage reduction only affects attack damage. However, as BlackRose pointed out, there is no way to get an Illusion-type unit to use an ability either.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.