Im thinking Lena's rock will give her, Agent Liberty, and Manchster Black powers during some kind of skirmish. Or at least Manchester Black. Maybe he'll volunteer for the experiment, and get his mental powers as a result. Perhaps Agent Liberty steals the rock, and tries to give himself powers but it turns him inside out asshole first and he dies. Manchester survived because he's banged aliens. Or most likely because he's the good guy. I think he's gonna hook up with Kara. They seem to have romantic tension. Brainiac's gonna have some kind of sex with the trans lady. (Who's actually trans IRL. I couldn't tell.)