Cursed Aura talent with 1.2 master (category point) and investment 5/5/0/0 gives you:
- Dark Gifts at effective level 6 gives +1 bonus level to all curses. This means at least power 2 with all curses, equals to at least +3 to different stats,
- Defiling Touch at effective level 6 is affecting rings = +2 more curses
Curse of Shrouds at level 6 gives 25% resistance, +11 condition etc., more with more levels. I think curses will scale to level 10. It could work really well with Doomed and his movement bonus in darkness or Cursed Rampage. At curse of Shrouds level 10 it can be +45% resist all each turn.
All curses scale, so 50% for Ghoul after humanoid kill, etc.