My Necro Build

I just recently started to get into PvP and came up with this build for my N/R.
Please let me know what you think, and any improvements you feel could be made.

10 Soul Reaping
16 Curses
8 Beast Mastery
5 Wilderness Survival

Mark of Pain, Insidious Parasite, Price of Failure, Spiteful Spirit,
Plague Sending, Trolls Ungent, Rez Sig

My basic strategy is to throw all of the curses on the first warrior I see, and basically watch them kill themselves. If I happen to get bleeding put on me, I can send it right back to them. Beast Mastery is high so my spider can do lots of damage. Warriors tend to ignore him, which is a mistake, because the spiders damage is added to the 42 shadow damage done by Mark of Pain.

Any input would be appreciated.

i say call of haste to speed up pet atk and mark of pain dmg

ya, mark of pain doesn't affect the one with it on, only adjecent foes

yeah, to affect the one with it on, you need barbs.

I misread Mark of Pain, maybe I could replace that with Rend Enchantments?