I was on the world building team for the Unfinity un-set project at Wizards of the Coast, for an Intergalactic Theme Park integrating existing MTG elements while testing the waters for bringing science fiction into the IP. Such a fun experience and team! Big thank-you to the art director Dawn Murin.
All the drawings were done with ballpoint pen on notecards on a magnetic board. It's a nice modular way to work, one sketch per card, then assembled and tinted in Photoshop.