Action Comics #892

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Deathstroke leads Luthor and his team to the Ross Ice Shelf to find a dark ring energy sphere. Locating it, they discover it's been there for billions of years. Suddenly, Deathstroke goes crazy and attacks, and slowly everyone else starts going mad, and fighting each other. But as Spalding completes his analysis, the sphere suddenly changes energy, and the madness stops. Meanwhile, Gorilla Grodd checks on another sphere.