look, there is a sword that drops which is pretty close to this in Gruuls lair.  If ur guild can down gruuls, then let a shadow priest or boomkin get this, if not, then fair game to you and more power to you for getting this.  Despite my name i do PvE a lot. 

I know someone is thinking,"shadow priest at 70?  go holy"....A shadow priest who knows his toon can become very, very important in a raid / instance.  Look, in a normal instance, most fights, our vamperic embrace (affected shadow spell damage, not healing) will keep everyone minus the tank at full or close to it from minor and i can't tell you how many healers and other dps love us for vamperic touch (again, affected by spellpower).  So before you say "whats wrong with you for being shadow at 70", keep in mind, 2 GOOD shadow priests in the same party will keep eachother pretty good on mana, and will benefit others as well...(without improved, the healing meter in a 5 man instance rates me a little more than 1/2 the healers...so if a total of 1 million was healed, 333k of it was me, which can make a healer's job less stressful(that was based off of an SL instance i did a while back).

Mages + Locks = great DPS.  but where a lot of guilds fail at is selfishness.  You see, A lock will put out more damage if he uses his curse tahts a dot, rather than curse of shadow.  But if he uses curse of shadow, the mages and shadow priests deal more damage.  So while his score isn't as high as it could be, its outweighed 100x by the usefullness of the extra damage the other 2 classes get. (boomkin too, everyone leaves them out, but i love my furbies :D).  So if that shadow priest had this wep with a soulfrost enchant (any other enchant would be unworthy for this wep imo) he would gain a lot more spell power, which would make the curse of shadow even better, which would generally benefit the whole raid more due to vamperic embrace, touch, and other random damage.

What i'm saying is, if ur in a guild that can down gruuls, for the sake of ur guild's proficiency, let the shadow priest / boomkin have this before the mage / lock.  Not too many maces out there that compete with this, but there are a lot more spell dps swords than u think. when it comes to this wep:  SP / Boomkin > Mage / lock.  i hope u guys understand my thought process, but i'll restate this as not to offend some of you, if ur guild can't down gruuls, then GO AHEAD AND ROLL ON THIS  :)

Shadow priests are batteries, and to keep the party charged, we need to be geared  :)

sry, i hope u all know what i'm saying i just suck at putting my thoughts on paper (or screen)