The impact is minimum, as many times it can be an easily overseen detail, or it can have the best of the outcomes, by making something more visually understandable without messing up basic concepts
One example is the currently popular Tera Pokmon, Charizard-ex, which has an HP of 330
Black Dragon, for example, is overcosted at 5BB for a 4/4 flier even if it does give a creature -3/-3 when it enters play
Being able to steal all of your opponents' artifacts with it is a great bonus, but with Odric's Blood, and Surly Badgersaur and Dockside Extortonist's Treasures, it wouldn't be too difficult to get to that number on your own
Each color being printed separately gives us room for errors to happen at each color