Alien Evil Crystal

Spirit crystal, the name of a world, is also the cornerstone of this world's civilization. Spiritual crystals can protect a world, allow aerospace crafts to fly into the sky, and can also be made into crystal devices to give people supernatural abilities. Crystal tools have four forms: weapons, spiritual crystal books, spiritual crystal cards, and crystal-colored puppet fire, which correspond to four professions, warrior, warlock, summoner, and puppet master. People who own crystals are called crystal masters. The protagonist Lin Mu's crystal artifact is a spiritual crystal book, but he is not a warlock, but a robber who steals other people's abilities for his own benefit, so he is called the Evil Crystal Master.