share his power with the bald billionaire. War of the Green Lanterns In the Brightest Day crossover, Sinestro discovers a white power battery in a crater on Earth. In the first issue of the "New Guardians" story arc, Sinestro reveals that the white power battery wants Hal Jordan. He and the other Corps leaders must pursue Krona, who is trying to capture all of the emotional entities. Sinestro must also work with Kyle Rayner and the Green Lantern Corps in an effort to rescue Soranik Natu from a Qwardian who made Sinestro's original yellow ring. In the War of the Green Lanterns storyline Sinestro and the other 'New Guardians' are trapped in the Book of the Black by Lyssa Drak while trying to recover the emotional entities from Krona. Hal Jordan alone is able to avoid the book and escapes with the other "New Guardians's" rings. He later uses Sinestro's ring when Parallax is returned to the Central Power Battery, allowing Krona to control all Green Lanterns. Hal and others escaped only thanks to their prior experience with Parallax granting them an immunity to the initial assault, to give himself a weapon against the other Lanterns. While attempting to escape the Book which forces the New Guardians to re-live their lives prior to acquiring their current rings, Sinestro discovers Indigo-1 in a prison cell, angrily proclaiming that she will escape whatever Abin Sur has planned for her, although he chooses to focus on his own escape rather than remain to question her more about this, only for Krona to burn the page that Sinestro is on before he can escape. Sinestro and the others are later freed by Kyle Rayner, who 'draws' their escape. Sinestro's ring attempts to return to him, but is overridden by Krona, who wields all seven varieties of power rings. As Hal Jordan battles Krona, Sinestro hears him as he declares his dedication to the cause of the Green Lanterns and is inspired to join his old enemy in battle. As he fights Krona, a green power ring comes to him, making Sinestro a Green Lantern once more. Sinestro is not interested in becoming a Green Lantern, but the Guardians of the Universe convince him to join the Corps. Later, when the Green Lantern Corps are in disagreement and attempt to kill him, the Corps break into the sciencells, but they discover that Sinestro was in