It looks like it's a sport, which hostas do from time to time. If you want to keep the green part as a separate hosta then separate with care. Otherwise, you can just reach down low and twist off the green part. What you don't want is to let the green part take over because you can lose your Tattoo that way.

Fun stuff to find something new growing.

It looks like the hosta virus x to me, but nothing has changed in this bed.

It looks like the hosta virus x to me, but nothing has changed in this bed.

We might be able to pass judgement if the picture were sharper, less grainy and larger. If it was taken with a phone, try a real camera for better results and repost.

Pieter

What about it makes you think of a virus? Is the tissue collapsed?