Post by SquireKel
You may want to look at
woohaa's
Unholy Dps Guide, which covers rotation, stat priorities, and talents.
Post by apocalypsa
woohaa's guide, while good, is from 4.2.2 - so a bit outdated. Check
EJ if you have the time.
Some copypasted stuff in case you're lazy:
Standard Stat Priority
Strength > Hit to Cap > Haste > Crit > Mastery > Expertise to Cap > Agility
Adjusted Stat Priority for Gurthalak Owners
Strength > Hit to Cap > Haste > Mastery >= Crit > Expertise to Cap > Agility
Single Target Priority
Diseases
> Dark Transformation
> Death and Decay/Scourge Strike (UU or Death Runes are up)
> Festering Strike (BB and FF are up)
> Death Coil (Sudden Doom, high RP)
> Death and Decay/Scourge Strike
> Festering Strike
> Horn of Winter
And then there's generic dps things like synchronizing your cooldowns with eachother/raidbuffs/boss buffs, standing behind the boss, and using pve gear(Idk if that's your pve set, if it's not, forget this part)
Also, 23k with 379 ilvl is far from terrible - its actually pretty damn good for most people.