Dragon Balls (Zekons)

Dragon Balls (also known as Wishing Orbs) are the mystical artifact of the Dragon Ball series. They are large, crystalline spheres (of varying sizes and colors) that feature five-pointed stars (ranging from one to seven, and also varying in sizes and colors, along with being either rigid or flat in appearance) inside of themselves (akin to glass art); individually, they have no powers, but united they have the ability to call forth their associated Eternal Dragon who can grant (usually) one wish(s).

Wishing powers
The Dragon Balls' powers can be used by any person to grant one ore more (after being upgraded) wishes to revive person, restore planets, or any other things like Oolong wishes for the girl's underwear.

ZEXAL Story

 * Black-Star Dragon Balls - Revive Rio Kastle and the others that died during the Barian Emperor Onslaught incident. Because of Reginald's Spirit Core is destroyed by an enraged Samuel Nakaoka the Second, Ultimate Shenron can't bring Reginald back until it was restored though he has no memories of Yuma, his sister, or as a Barian Emperor Nash.

Yakuza Story

 * Black-Star Dragon Balls - Revive Shinji and Reina that has been killed by the Takuzi and his crews.