The flavor wins make it onto the interesting sorceries and instants, including Reprieve, which is (almost) a two-mana white counterspell, and You Cannot Pass that can destroy blocked creatures
With so many of our creatures being 1/1s, this isnt always beneficial
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its types, color, or so on
Carrion Cruiser I imagine Carrion Cruiser mostly sees play in Peasant Cubes, but a Gravedigger that supplies its own fodder could probably find a home in slightly stronger Cubes as well
It works particularly well in control decks that have plenty of ways to dig through their library, counter spells, and disrupt the opponent through cards like Blood Moon
The player who goes second will need to do something quite special in order to take back the initiative