As the Host of Destruction, I Choose to Save the World

"Create disaster beasts + doomsday + fight against the system + villains to save the world" Ye Yigang was poisoned and killed by his younger brother, and the system resurrected him. But the system allowed him to perish. Ye Yi was speechless. In this world, there are always mysterious-level space cracks with the ability to destroy nations, and alien species are constantly emerging, endangering personal safety. Isn't this enough? There are three of them! No, more than three. [System Spirit 7777 launched a mysterious space crack]