[That's -

He stills for a moment, thinking about it.

A major surgery...not that he didn't mind, but the regeneration would be a problem - if he were kept alive.

And...not only that, but it would not just be him who would suffer through recovery, if he took it. He'd have to make Holmes aware of his condition, after all.

Taking in a breath, he nods.]

...I...believe I would be interested, but I wish to know more...and, also, it is not just my consent that you will be needing.

I am...linked, for a lack of a better word, to Arthur Bell. In truth...

[He hesitates, before deciding to just say it.]

I assume you are...a Lich, yes? Even if you aren't, I'll explain that Arthur functions as a sort of...hm. Living Phylactery? Yes, that sounds right. He is the reason I can come back to life after death, no matter what kind - as long as he lives, I live.

...However, he also shares pain and other sensations alongside me. And, of course, if something went wrong and if I somehow truly died...well, most likely he would perish along with me.

So I cannot say yes or no until I've discussed it with him.