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The first design doesn't look like one that I would leave new players with as their first mon, the overall design is simple but I don't think it pops out enough.
Second design could be mistaken for a fighting-type although besides that I like the general look of it better.
The third design has an interesting character and looks in theme with it's typing
Love all of these, but I'm also rooting for Magistrum's elk, so I don't want another hoofed mon in our trio.
The hyena edges out the chameleon for prevo cuteness!