Quote Originally Posted by Agrieus View Post
No offense, but you're not going to sit there and continue to spam unmend once the fight has already begun, even on a single target instance. And the damage difference between unmend and abyssal drain is so insignificant on an opener that it's kind of a moot point, especially since the whole point is to obtain aggro anyways. Not to mention that if they did as you suggested and reduced the mp cost for abyssal drain, you'd still rather just throw out unmend to save hot bar space for something else.
This is why you spend most of the time on the forums complaining that you don't have TP as DRK!

You are supposed to spam Unmend when you are running out of TP instead of standing there looking at your own reflection in the boss's eyes.

Unmend at half the MP cost of AD and 30 potency more more than justify its use as a TP recovery spell.