It would be awesome if this bug with Trang-Oul’s Avatar could at long last be fixed 
If you complete this set the Necromancer will transform into a Vampire in appearance. He will also get skills such as Meteor, Fire Wall, and Fire Ball. This set certainly allows the wearer to have some fun with other players. Note: wearing this set will increase casting delay resulting in slower casting (even with fast cast items). This is a bug and has been reported.