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@Felthry There's a card game called CardBots that I imagine could be strikingly similar. Basically it's a card drafting game where players take from a pool of weapons/misc. tech to create and battle giant mechs. Replace tech with biological parts (or combine both if you like!) and the mech with the players themselves, and there you go!
The only issue I see is having a 'deck' of full sized body parts doesn't seem that practical to carry around.
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@Wrothmonk Obviously they're magically bound into cards and then you take them out to use them!