What are the characteristics and abilities of Wang Yu in hayate the combat butler?

Sanzen'in Yukariko was playing hide-and-seek in the treasure house of Mykonos Island when Wang Yu found it. It is the legendary treasure of the 3,000-yard family.

There are 12 Wang Yu * *, respectively corresponding to the 12 constellation, engraved with the same heraldic as the magic circle of the Royal Palace City. Wang Yu was made by a king who collected the power of stars a long time ago. He is also called "the stone of desire", "the stone of prayer" and "the stone of fetters".

So far, the owners of Wang Yu known in the story are (the property inheritance certificate of 3,000 yuan should be destroyed), Xia, Orange Root, Emperor 3,000 yuan, and Ayazaki Exhibition (destroyed by Yicheng).