His smile was slow and tentative but also pretty bright once he really started picturing it. Life in the Underworld. It would beautiful. And she was right about their rich soil. They had plenty of riches in all aspects except for the living. Poe and BB kept Finn pretty warm, that's true, but it wasn't the same as greenery and life spreading beneath his fingers like it could on the surface.

"That sounds amazing," he murmured wistfully. "I-... Yes. If I can help you test, I'd love to try. You shouldn't have any problems with the soil."