Is there a limited number of artefacts, i.e. a limited number of times I can travel to?
If so, should I just be sticking to the main storyline and use the fewest artefacts possible? If I do use a lot of artefacts early on will it affect my endgame?
I'm asking this because the brother of a friend said he was restarting his game because he had messed up with the artefacts.