This is a legendary staff that is designed based on a traditional malay weapon called keris. It was newly placed by a supreme wizard in the hidden forest of Malacca so that those who the staff deems worthy could be its new owner.
The gems color will change based on one's natural element. green is for earth, red is for fire, blue is for water and white is for wind. However, if the color is mixed, that means the wielder has a combination of natural energy in its body.