Excellent point! I'm thinking Earthbender, then, because it works across the various Stephens (c!Stephen: stubborn; l!Stephen: in touch with nature; r!Stephen: grounded; h!Stephen: look at my pretty sand art!).

So finally Jon bursts out at him about how it is not his duty, he should use what he's got for good rather than throw it away out of a misplaced sense of guilt, because if he did that, what's next, voluntarily snapping his spinal cord because some people in the world are paraplegics?

And then Stephen gets uncomfortably silent and still, and it goes on for way too long, until Jon refuses to let him leave before extracting his solemn promise not to purposely render himself any differently abled.