Here's what I did. Lighting was my dining room table, which is typical of the light I use when I play games. I didn't set up a table, but the seating position is approximately correct for cards in the middle of the playing area. For each combo, the first picture is from the seating position, the second a closeup. No flash was used in any picture.
Disclaimer: I have no idea how close my printer is to reproducing the colours that will be used for the cards. It's an inexpensive inkjet.
Sphinx mixed in with Gorgon
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Gorgon mixed in with Sphinx
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Gargoyle mixed in with Hydra
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Hydra mixed in with Gargoyle
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I'm still a fan of Gorgon / Sphinx.