The primary language that you should use on your business cards would be that which you tend to use on a day to day basis, and you would not really want to stray from this without a shadow of a doubt. However, what if we told you that there was a way for you to make your card look even better if you managed to experiment with a few other languages as well since they can be surprisingly impactful for you too?
One really amazing language that you should try adding to Black Metal Cards is Japanese. After all, Japan is a country that has really started to have a pretty huge impact on the world around you to the point where it has ended up becoming one of the biggest cultural exporters in the world and virtually everyone wants to listen to what the Japanese have to say about various matters of import. Hence, by adding Japanese kanji characters to your business card, you would finally get the chance to look into the manner in which you can truly end up maximizing the efficacy of said card.
When people see that your card has at least some kind of Japanese character on it, this would lead them to assume that you have their best interests at heart. They might also get the chance to ask you about your own ties to Japan, and this is where you can start to describe your authenticity to them in a way that would shock and surprise them and make them really interested in your business.