DO ANY OF YOU READ THE WHOLE POST?? 101 votes for Obsidian?? LOL. PvP running Obsidian Mind is an absolute waste. You can be cocky if you want and try to tell me that you're always getting 3+ kills with your Nova Bomb but let's be real here. Most Nova Bombs are average 2 kills. With that gain back from Obsidian Mind, you're MUCH better off using Voidfang and having a new grenade guaranteed every time you spawn. That means every new engagement you have a grenade to harass enemies and at very least knock down multiple shields. Skull is an acceptable alternative if you really find yourself throwing your Nova Bombs while under heavy fire, but generally you should be blinking/flanking to toss those so I still would say you're better off with Voidfang. LBN if you're playing Skirmish/Salvage. Claws if you're REALLY just that much more in love with melee than using your grenades, but if that's the case then really you're not taking advantage of being a Warlock. /endrant