[DC] The Court of Owls' Castoff

The story begins in Gotham, decades ago. The Waynes actually had another son all along: their eldest, Thomas Wayne, rumored to have died in infancy. When the Waynes saw the baby, the doctor told them he had been born prematurely and died. But no one knew that the doctor was working for the Court of Owls, and that the supposedly dead Thomas had actually been taken away.

The Justice League received a lead pointing to a Court of Owls hideout. After Batman finally agreed to let the team go there, they found a man submerged in a green pool. He looked exactly like Bruce Wayne, and the pool was no ordinary pool...

Theme: Fulfilling the wish of a certain owl from a neighboring universe