While battling Diana he learned a few things about her sword.
Firstly the blade used her mana to create those blades of wind which were painfully sharp.
Secondly he saw that she had to use the life mana in the room to create a glove around the handle as if she could not touch it directly.
Lastly he realized that the blade was using her mana up like a dangerous leak in her vessel.
The battle raged on as these observations were made and since he did not have the mental fortitude to question these details right now he simply focused on slaying the boss.
With the extra strikes from the death mark skill he replicated he was tearing through her health faster than he had before and it was going to win this battle for him.
Rapidly slashing at her ribcage and tearing through her skull he was beginning to force her health to drain beyond the 20% mark.
