Coznix, The Fallen Beholder (Soul of the Void) is the Expert Mode exclusive second form of The Fallen Beholder.
Will rapidly unleash eradication beams at the player.
Rapidly ram into nearby players for massive damage.
Summons a void portal above the players head, which causes a tidal wave of lava to rupture from below them after a short delay.
All attacks will leave a highly damaging burn on the hit player.
Summons lava waves that increase in height the lower the health is.
When killed, Coznix's drops will spawn inside a box made out of Hellstone Bricks to keep them from falling into lava.
Defeating Coznix will cause either Lodestone Chunks or Valadium Chunks to generate throughout the world. This can happen up to three times per ore with each successive defeat, and more ore than usual will generate each time if defeated in Expert Mode.
Defeating Coznix for the first time will allow the Weapon Master to move in.
Once defeated, certain NPCs will start selling new items: