Justice League #43

"'The Darkseid War' event rages on as Batman takes a dark journey into the depths of Godhood and unlocks the forbidden knowledge of the DC universe! Meanwhile, arch-enemies Superman and Lex Luthor must stand together in order to survive, and Wonder Woman leads the Justice League in an offensive against the Anti-Monitor and Darkseid! But what is Grail's true mission during this war--and what is the secret she holds over Wonder Woman?"