I actually made a page on GuildWiki for it, my first contribution to that site.
Here are the particulars:
Profession: Necromancer/any
Attributes:
Curses 16 (12 + 1 + 3)
Soul Reaping 13 (12 + 1)
Blood Magic 4 (3 + 1)
Skill Set:
Reckless Haste
Spiteful Spirit {e}
Parasitic Bond
Suffering
Signet of Agony
Plague Sending
optional slot
Res (Res Signet or hard rez from secondary profession)
For the optional slot, consider Enfeebling Blood, Defile Enchantments, Chilblains, Well of Weariness, Awaken the Blood, Well of Blood, Blood Ritual, or Mark of Pain, among others. It truly is a free slot, and should be used to support the goals of a particular situation.
Equipment
* No particular armor set is required. You may wish to use Tormentor's Armor for the increased AL, and Bloodstained Boots if bringing a corpse targeting spell in the optional slot.
* Any Curses requirement weapon set is sufficient, with preference given to weapons that have a chance to halve cast time and recharge of Curses skills. Weapons that provide this as well as having a chance of +1 to your Curses attribute, such as The Stonereaper, are ideal.
Usage
Hold back until your tank has gathered the aggro, then choose a strong target, well positioned in the mob for adjacent effects. Cast Reckless Haste to cause them all to attack 25% faster but with a 52% chance to miss. Follow with Spiteful Spirit, which will then be triggering more often and cause more damage due to the increased attack speed. Cast Parasitic Bond to set up a heal for yourself and provide -1 degeneration, then follow with Suffering to provide -2 degeneration to your target and all adjacent foes. Now, use Signet of Agony to apply 25-second bleeding to yourself, followed immediately by Plague Sending to transfer those 3 pips of degeneration to your target and all adjacent foes.
Quickly cycle through the other targets in the mob, applying Parasitic Bond to each for the degeneration and self-heal. Each time Spiteful Spirit recharges, apply it to another target in the mob to spread more the AoE damage. Any conditions inflicted on you should be strategically sent to groups of foes with Plague Sending.
Counters
The build has no hex removal, and healing depends on Parasitic Bond expiring or ending with hex removal or the death of your target. As the build is heavy in the use of spells, skills that attack spells such as Backfire or Guilt are particularly effective counters. Long cast times for some spells make the build more susceptible to interrupts.
Credit: Me, Myself, and I (a limited partnership.)
(ok, so that was pretty much cut and paste from my wiki page, but you get the idea.
)Anyway, this build is fun to play and provides a nice amount of pressure while making the monk's job easier since over half the mob's attacks will miss.
Which means Chilblains is totally worthless, if you stay away from aggro. 
)
