Smallville: Season 8, Episode 8

8 - 8: Bloodline

Clark receives a package from an anonymous benefactor, which contains the blue Kryptonian crystal. When he touches it, he and a visiting Lois are transported into the Phantom Zone, where they meet the captive Kara. She manages to open a portal but Zod's imprisoned wife Flora takes over Lois' body, returns to Earth, and goes on a rampage with her superpowers.