Ajnin!

First off, and this may be old news, Matt Holmberg updated his site, Matt's Underworld. Go check it out.

More importantly though, Matt has freely given his permission for us to use his images on the custom cards. Obviously copyrights still belongs to him and/or 2i where relevant, and every custom card I make belongs to 2i anyways. But it's still good that Matt doesn't mind us using his art.