I was going to roll /poison (poison is one of my favorite abilities in any game), that is until I started looking at /dark. Maybe I'm wrong on this, but it seems to me that /dark debuffs just as well as /poison, except AoE. It also has a better heal, an arguably better rez, and gets a debuffing pet. Sure, poison has insane debuffs when noxious gas is on, but that power has a long recharge, and requires a pet to be in melee (aren't demons ranged pets?). I'm guessing that poison would be a better fit for Thugs.
