The Wizenstone was among the most powerful magical objects in the entire world, known to very few. It used to have the power to undo magic. It used to be able to erase the boundaries of a magical preserve, disenchant a magical item, or even strip a magical being of their powers, including Wizards and Dragons, turning the latter into normal human beings.
History
Humbuggle possesses the Wizenstone and used it to create an extremely hard game in Stormguard Castle. The Wizenstone is hidden in Stormguard Castleand the castle is only accessible during the solstices and equinoxes. In this game, the power of the Wizenstone causes Seth to lose his identity when he opens up a door. Seth thinks doing this will make it so Kendra might be able to claim the Wizenstone to keep it away from the dragons, but the Wizenstone disinegrates all those who touch it. Therefore Kendra Sorenson banishes it using Banishment Rod and the Wizenstone is transported to the Titan Valley sanctuary.
After Seth discovers the True Games and completes them, Seth destroys the Wizenstone with the Unforgiving Blade, making the Wizenstone lose its power. Humbuggle mentioned that it would still sell for quite high price, though.
Source
- Wrath of the Dragon King (Dragonwatch #2)