Eleven watches with a held breath and a growing stitch in his side as the lightning connects and surges through Zuko's body. But his friend is still moving and moments later, the lightning exits through his fingers, back into the sky as Zuko continues to breathe.

Eleven drops, legs numb, and clutches his side, hissing through his teeth as the stitch in his side flares with every breath.

"Thank the Goddess," he says heavily, fingers shaking from the rush of adrenaline. "For a moment, I thought I'd killed you. ..But you did it. I'm so glad."