I still don't get why, after all this time, with all these silly attempts to 'balance' it, you have not implemented some way to make it so that a perfectly healthy mob, hit with a death spell, don't DIE(It is a epic/elite mob after all) but it WEAKENS it greatly. Something akin(but not equal) to when we get hit with neg levels. We only have 20 total levels (or 25 with epic levels?) but losing 3-4 levels can REALLY hurt. that's 1/5th of our 'life' essence. Why not implement something similar to that vs mobs. AKA a wail hits a group of mobs, they all 'fail' teh first check(before immunities) and are all weakened by a 'fair' amount (Balance this on cool down of spell, cost to cast, level of mob, whatever) so that that wail, while not KILLING the mobs outright, make them MUCH easier to handle both for the melee's and casters. A wail followed by a few acid blasts would be better total sp conservative than a bunch of acid blasts, or multiple death spell attempts. And not only that, it would help the melee's (less to hit, less damage, less ac, less hp, whatever)
All I ever see is the 'it works... now it don't... oh it works again.. oh but we taking it away now.. oh here u go have more... nope, gotta take that away now' balancing cycle by the devs. Nothing really 'INTELLIGENT'