How to get the circus troupe merchant to show up?

I'm trying to round out my early game Gwent deck. According to multiple sources, there should be a Circus troupe encampment northwest of Carsten, west of the Vegelbud estate. There I want to find this merchant who sells multiple cards. However, when I go there the area is completely empty.

Does the camp only appear later in the game, or during a particular quest? Or is there some other condition to unlocking him?

I have the Steam GOTY edition with all DLCs installed.

1 Answer

Starting the "Open Sesame! Breaking and Entering" quest (part of Hearts of Stone) will make the troupe appear. I'm not sure if there are any other ways to get it.