This was a change in the nature of the soul. It could allow him to directly change its nature when facing a powerful attack, turning the attack into protection or probing.
Once it became an amplification, then, such a scene would still happen. Not only was he not injured when he was attacked by the enemy, but the enemy's attack also brought him a huge increase in strength, making him stronger!
As for the drawbacks of this item, the main thing was that he could not control it and could not point to the area he wanted every time. Every time its needle turned, it was fixed. It could not be changed.
For example, the first time would point to the attack area. If the wheel was pointed at the attacking area when facing an enemy's attack, then the strength of the enemy's attack would double from the original foundation.
This definitely wouldn't do.
