Doryani
Doryani was a thaumaturgist under the command of the Vaal Queen Atziri.
Lore
Juding from the 
Doryani's MachinariumDoryani's Machinarium
Maze MapMap Level: 80
Map Tier: 13
Guild Character: ‹
Item Quantity: (+40%-+60%)
Item Rarity: (+40%-+60%)(20-50)% increased Experience gain
Found Items have a 10% chance to drop Corrupted in Area
Unique Boss is augmented by Player choicesWe are ever the makers of our own undoing.Travel to this Map by using it in a personal Map Device. Maps can only be used once.
, he was probably the constructor of the Vaal Oversoul.
"
We are ever the makers of our own undoing."
Doryani seems to have used criminals for horrific experiments, no matter how severe the offence. In this case he used an advisor to the queen socketing gems directly into their flesh. This was done to help Atziri on her search for eternal youth.
"
Now I'm stuffed full of gems and destined for the block. [...]There was no escape for me. Should our Queen and her thaumaturge succeed, there will be no escape for anyone.
I should have drawn the last breath from him. Yet all I did was draw his blood. Doryani will take my head in the morning and I have my shaking hands to thank for it. For seven years I advised. For seven years she listened. Today, she would not. Now my blood will be but another drop in an ocean that will drown this land.
"
- - Vaal Letter
There are several artifacts related to Doryani:
Doryani's FistDoryani's Fist
Vaal GauntletsQuality: +20%
Armour: 278
Energy Shield: (96-120)Requires Level 63, 100 StrGrants Level 20 Doryani's Touch Skill
+(80-100) to maximum Energy Shield
30% chance to Shock
Adds (150-225) to (525-600) Lightning Damage to Unarmed Attacks
Adds (90-135) to (315-360) Lightning Damage to Spells while Unarmed
+(200-250) Energy Shield gained on Killing a Shocked Enemy
30% increased Effect of Lightning AilmentsDoryani's ingenuity raised the Vaal Empire to unprecedented heights. His curiosity reduced it to ruins and bones.- Doryani's CatalystDoryani's Catalyst
Vaal SceptreSceptre
Quality: +20%
Physical Damage: (122.4-146.4) to (204-276)
Critical Strike Chance: 6.00%
Attacks per Second: (1.55-1.61)
Weapon Range: 11Requires Level 75, 113 Str, 113 Int32% increased Elemental DamageSocketed Gems are Supported by Level 20 Elemental Proliferation
Adds (65-85) to (100-160) Physical Damage
(11-15)% increased Attack Speed
(6-10)% increased Cast Speed
(30-40)% increased Global Critical Strike Chance
0.2% of Elemental Damage Leeched as Life
(80-100)% increased Elemental DamageThe result of the catalytic reaction would be either immortality for all,
or death for all. It was a risk Doryani was willing to take. - Doryani's Invitation
