I suppose you could just ask Sami. She could probably find someone that would also lend you the energy. Just a thought.
As soon as the rescue party leave through the portal then Lucan will return. It's too bad I can't give new Lucan a theme song because if I could it would be this.
[spoiler]http://www.youtube.com/watch?v=SRvCvsRp5ho&ob=av3e[/spoiler]
Old School Jon bon Jovi. FTW!!!
EDIT: I realized that this song would perhaps be better suited for Lucan.