"Would he still be a werewolf?" 

"He should be, the magic is pretty adaptable and can reconstruct magical powers from our own universe. Of course this isn't something that has been tested."

"If you think he still would be, then it's worth it. What do we have to do?"

Okay, vaguely prejudiced against non-werewolves.

"Well, we still would prefer to wait for a couple of days in case the others show up and we still should discuss this further so you can make an informed choice. It is important to understand that my immortality is a very permament thing and if it doesn't solve the problem or interact badly with future solutions it isn't something we can revoke by any means we know of. One of its failsafes against mind tampering is forking, duplicating the two versions of the person, this might lead us to have multiple copies of your uncle and they might be any combination of catatonic or recovered. And we might need to try mind tampering to help him if immortality doesn't. Would he be okay with multiple versions of himself walking around? Some of which catatonic?"

"Yeah. I can't ask him, but he wouldn't care." 

"Well, it might be a good idea if you talked to him, just in case he can hear. Just so he won't be scared when it happens." Vera finally speaks.

"Thank you, Vera. Another alternative is if we tested the effects on another werewolf. But Scott is not up to it yet, and I'll fully understand if you don't want to be a guinea pig. Even more so when one of the tests would involve handing you a means to kill your current body so we can be sure it preserves lycanthropy."

"I would if there was an alpha here, to turn me afterward. Sorry. Scott would probably take a 'cure', though." 

"We'll offer, but he might deny it on the grounds of having to hide his wings for the rest of his life. We would still need to wait a week until we got confirmation. That is how long it takes to grow a new body."

"Never mind, then. I'll do it, I can't wait for Scott. A week, and then we do it."

"Okay, anything else you want to wrap it up before that?"

"No. Hit me." 

"Okay, take off your shirt and drink this it will hurt briefly." He offers a vial of water.

It tastes like regular water, but as soon it passes his throat there is a sensation that spreads from the center of his body, it is soon eclipsed by a brief burst of pain and then the confusing sensation of new feathery limbs in his back and something else... Derek can feel the water in the air around him and can sense it in the flower vases around the room, it is obvious that he can just reach out and move it, there is another sense that he could make the air chilling cold if so desire.

"Greater gift of humidity, you can control water." Fenris announces. "Anything else?"

"No, I think that's everything." 

"Do you want to die now or do you wanna learn how to fly first? And... preferences on what to do with your body?"

"Ask Scott to bury it, he knows how." 

His wings twitch.

"Kill me now."

Well, that totally didn't sound concerning. Except it did.

Before anyone can say anything Vii takes a couple steps forward, produces a syringe from a pocket and swiftly stabs Derek in the neck.

"I was going to ask about his personal belongings..." Felix says but Derek is already unconscious before he can hear anything else.

They remove Derek's belongings from the body and store it in Fenris' cold dimension.

When is time Fenris informs Scott and Stiles of what happened and Derek's request.

"A whole week without Derek Hale. We should throw a party."

"He had to die, right? For it to work?" 

"He had to die so we could be sure it does work normally with werewolves. I have to sleep to check and see if he will remain one, but it is likely."

"Okay. Did he- I hope it worked." 

"Did he what? There is a body growing in his fountain, so at least he is going to come back."

"I don't think I could do it." 

"Killing your current body or let it die?"