Crit on special skill

Is it possible to make crit effect the special skills.

It will give some chance for more dmg or healing.

And I dont think crit shall effect tur buff and debuff. Like damage over time, or armor % and stuff like that.

Cause the troops with mana gain is way better then crit (my opinion). But it will be more equally if they made special skills crit able.

If the special skill crit it can be + 25% or something around there.