Byzantius Soul is one of the four Avian Soul Bosses fought at level 69.
Recommended Equipment Edit
Sneakerlogy Limited x2
Battle Stategy Edit
Buy 40 Orchid Vials,and 20 Moonshines.Keep using Orchid Vials until Byzantius Soul attacks you for 1 damage.Then use your Moonshines then attack.
Boss Drop Edit
+78,000 income, does not occupy an investment stock or need to be equipped :)
Avian Soul Slayer I
Defeat the soul spawn of Byzantius.