u/Luolin_

Ok, you are sent in 1310 in Europe. Forever. Bye.

You can choose your age, your gender. You pick where you go and can instantly speak the language and get an understanding of what the current local situation is.

People around you are implanted with memories that you were always sort of around so they don't realise you are new in your village/town/location.

Your memories of your current life fade within 1h You need to pick your livelihood. Once you picked it, you instantly become good at it, not world changing, but you are good.

What do you become and why?

Ill give you mine in the comment.