You would not need CRISPR to do that. If something like that ever occurred they would probably use other methods that have been very well studied for much longe

You would not need CRISPR to do that. If something like that ever occurred they would probably use other methods that have been very well studied for much longer and are considerably easier to apply. Including just taking blood samples from bats (or pangolins or whatever) and archiving a great compelling virus and culturing it in a lab. If you wanna add CRISPR into the mix you could also make a virus like that make someone grow some horns and get hiccups that sound like a kazoo though.