The original design file for Legends contained six full cycles of creatures representing the six different pieces in chess. Each color had a Pawn, a Rook, a Knight, a Queen, and a King that were identical across the colors; for example, the red King and the blue King did exactly the same thing.
Almost all the pieces were cut in development, and while a few of the abilities were used elsewhere (the green Rook inspired Jacques le Vert, for instance), only the green Pawn made it through relatively unscathed. Its mana cost was changed from to (in those days 2G meant two mana, one of which was green), and it was given protection from black and renamed Whirling Dervish.
Below is the playtest sheet for the red and green chess pieces for your perusal. The other three colors were exactly the same.