Guild Wars 2

http://gw2skills.net/editor/?fQAQNArYWjMap7Nbab8bKApCPPV47oHEfcyUKcndA;T0AAzCpo8xUkoILMOfkwsqYUxpiXFzAA

Weapons:
Scepter + Sigil of superior earth
Dagger + Sigil of superior agony
Staff + Sigil of superior earth

Healing Skill
Consume Conditions

Utility Skills
Blood if Power
Corrupt Boon
Plague Signed

Elite Skill
Plague

Traits
Curses (30): Hemophilia, Weakening Shroud, Lingering Curse
Death Magic (10): Greater Marks
Blood Magic (10): Mark of Evasion
Soul Reaping (20): Vital Persistence, Soul Marks

Armor
Superior Rune of the Krait x 2
Superior Rune of the Afflicted x 2
Superior Rune of Lyssa x 2

Accessories
Rabid Amulet + Rabid Jewel

Stats
Power: 916
Precision: 1885
Toughness: 1660
Vitality: 1016
Attack: Scepter (1926) Staff (2027)
Crit. Chance: 50%
Armor: 2580
Health: 19372
Condition damage: 1279
Critical damage: 20%
Healing power: 100

Condition duration: 10%
Bleeding duration: +40% (10% wielding off hand dagger Sigil of superior agony)
Scepter conditions duration: +33%

I find this build very effective in 1 VS 1 situations with good survival and damage, and is extremely useful in team fights because has a lot of AOE bleeds.

The “combo”
Blood is Power + Deathly Swarm + Death Shroud + Dark Pact + Doom + Leave Death Shroud + Grasping Death + Enfeebling Blood and then just use the auto attack of the scepter.
I found this “combo” pretty powerful.