I'm a hobbyist game dev. Just finished my card editor, it is the first project I am proud to show off. Took me about a year to make it. It is quite powerful for what it is. Making a new card set is as easy as it gets. Currently, it can be used only in one game - Bartok The Picture Game. But I am working on the next card game already, and I have a plan to make a lot of card games that support this card editor. So one card set will be playable in any card game that I will release.