It would be really cool if some day Wizards designed a bunch of non-creature cards to prefer Vanilla creatures (creatures without any abilities). Here are the ones in Modern minus 8th and 9th Edition (I don't like White cards). If we made these the only creatures in a hypothetical set, the colors would not be in balance, and neither would the mana curve. I wasn't there when these were created, but they mostly look like hole-fillers. A few are under-costed, which is great. This is especially true for the big Green creatures and some of the small White creatures.