Fixed, thanks.

That is true, the spell is individually used per member.  I could multiply that out for the attack rating but that may be misleading (there is a difference between a 55 attack and 11x5 attacks).  But I could update the description to include that info.

I'm talking about the indicator in the bottom right corner which gives the armor adjusted damage potential.

When using special abilities it only shows the damage as if one troop were attacking, though more than one may be present. (I'll take a screenshot when I can)