This build is about debuffing your opponents as good as possible.
It's important to surround Prismatic Sword with Dark items. Especially Prismastic Orbs are because they are Magic, Dark, Holy and Vampiric.
It's important to have 4 Dark Items on Dark Lantern to debuff your opponent with every revive.
It's possible to do so much blind that your opponents can't hit you anymore.
Darksaber can blind your opponent aswell and gets a lot of damage aswell. It's your main damage weapon here.
To trigger the Dark Lantern effect with the debuffs a secondary time you'll need a Phoenix
With that dual weapon setup you'll need Stamina. Strong Heroic Potions are the best for it.
As defensive items you can use a Corrupted Armor aswell. Corrupted Armor makes Holy items Dark aswell.
Cap of Discomfort, Stone Helms and Winged Boots can be good aswell.
If you get enough Mana you can use King Crown or Glowing Crown aswell