[Re-chap]
The thing was Priest's Katana has no special power on its own. Not even a single ounce of power, and it was actually fragile and weaker than a normal wooden stick. But can channel any kind of energy it receives or absorbs and the channelling power will always be ten times stronger than the original power. And now with Priest's energy completely drained, the only source of energy it can receive was none other than Vlad himself; his powerful attacks were the source of energy.
Unluckily, Vlad felt the sensation the Katana doing on him, this time, and realized the dumb secret of Priest's fragile plan. Enraged by his failure as an individual, Vlad snapped.
