I'm a healer build SM with 3:1 con wis stat build atm, (wis and defense runes in my equipment) but I have the feeling I'm lacking in many areas. In pvp I still get killed in about 4 hits, and in both pvp and pve I still go OOM quite fast in dire sittuations when I need to spam critical heal. Not to mention my damage is so pathetic that I can't even scratch someone in pvp. All in all, I'm nothing more than an easely squashed heal slave.

I've been thinking about going full wis so I could replace my wis runes (well, I only got 2 wis runes left in my gear because of terrible runing luck) with magic attack runes so my damage would raise slightly. My wis would be high enough to spam some more critical heals, my damage would be slightly higher, but the downside is that I will die even faster in pvp. An OOM healer might be useless, but so is a death healer.

Instead of adding magic attack runes I could also go for con and hp, but then my defense would be even lower so those pesky warriors could squash me in 3 hits instead of 4. Not to mention my damage would stay exactly the same as now.
Ofcourse I could try to aim for a +10 staff to increase my magic attack, but then I still have to try to find a balance in both wis/mp, con/hp and defense.

All in all, I want to increase my mp/wis, but still have more than enough hp and defense to stand a few hits. I would prefer to have some more magic attack as well, but I can't have it all. I will most likely have to try to get more magic attack from enchanting my staff.

Oh one more questions for those SMs who specialised in the right tree; is mephisto's thorn worth maxing? Did anyone test the difference in damage and dot at lvl 1 and lvl 3? I haven't been able to decide yet if I should either max out thorn, or leave it at lvl 1 and put the remaining point(s) at the left side to get lvl 1 night terrors.