The Void Shadow will summon Void Shades all over the void to attack all intruders, throw blocks onto them which give hunger, blindness and slowness effects, will partly destroy the platform to decrease the space where the intruder can move to and can only get damaged by destroying Void Fragments which are summoned during the fight. There are two types of Void Fragments, only one of them damage the Shadow but all of them have to get destroyed. It always hovers around the void platform but if it has less than half of its health points (indicated by getting black) it gets in a death mode where it runs to the middle of the platform where it can get damaged by melee attacks. It is invulnerable to arrows and effects.
The Void Shadow spawns a shadow chest on its death where the player can find rare things and grants all players the Fame effect which is needed to breed the dragon egg. The chest contains the source stone and can contain ender pearls, iron ingots, emeralds, diamonds, gold ingots, golden apples, experience bottles and enchanted books with the best enchantments you have ever seen. If Medieval Weapons is installed you can even find a Thalleous Sword in it.