Years ago I had an idea of a Halo-inspired card game, so I set out to make a concept of what I envisioned such a playing card to look like, down to the mechanics, the sorts of cards that would be in play, and how they would function.
If I had the resources available to me, I could theoretically customize and pose a Spartan/Elite model on a 3D program and easily import them into a card as a PNG file. However these card was made purely as proof of concept (perhaps I should approach 343 Industries with a prototype, that would be cool!)
I intend on creating Armory and Map cards too, so maybe eventually I'll have a full playable deck...

And here is an alternate boxart featuring our two favorite heroes in Halo.
This screengrab was taken from Termacious Trickocity's video, check them out, these guys are incredible! ---> https://www.youtube.com/watch?v=LHBWEX4lly0