This blade was named Chaos Blade, the symbol of the garrison leader, and it didn't belong to Adrian. Yet, in such a critical moment, he had managed to call upon it.
As soon as the Chaos Blade appeared in Adrian's hand, his aura surged, filling the air with sizzling sounds. When his intensified aura covered the blood-red ghostly hands, sounds of sizzling echoed through the air. The ghostly hands began to melt away at a visible rate, just like the earlier Blood Specters.
This was to be expected