Build:Blood Mage

Full Build Details
This build uses his own blood to deal devestating decay damage. Is it the strongest build out there? Probably not. But it is a lot of fun!

The final build uses Tenebrous set with the following enchantments, but the Jade-Lich set works really well too. Tenebrous Armor: Chaos and Creativity Tenebrous Helm: Order of Discipline Tenebrous Boots: Speed and Efficiency

Besides that the Virgin Lantern should be enchanted with: Sanguine Flame This will make flamethrower spew out a decaying blast, rather than a fireblast. But if you like, you can also use the Jade-Lich staff for increased decay damage.

Combos
You now have a weapon infused with decay damage, a cursed enemy, buffed decay damage and a decay turret. Time to start kiting and blasting them with decay damage!

Keep running around, blasting them with 'Torment' and 'Elemental Discharge'. Use 'Mana Blast' in the blood sigil to destabialize the enemy, and follow up with a decay flavoured 'Flamethrower' from your Sanguine Flame enchanted Virgin Lantern. The impact damage from the flamethrower should be enough to knock down any enemy that wasnt knocked down by your Mana Blast. Follow up with a basic attack or two, and continue kiting. Don't forget to laugh maniacally during the entire process.