Adam Strange and Seg-El in “Unfinished Business”

Adam Strange

I come from a planet called Earth. A time centuries from now. And I've come here to warn you. Someone from the future is coming to destroy Krypton.

Seg-El

Okay, right. Why? Why would they do that?

Adam Strange

Because where I'm from, your grandson becomes the greatest hero in the universe. Like, ever. Unless somebody changes things to make sure that he's never born... [Adam collapses to the ground]

Seg-El

You all right?

Adam Strange

I'm running out of time. Take this. [gives Seg the Sunstone] You have to find the fortress. You have to save Superman.