Creating a Cube is a labor of love one that takes hours of research, playtesting, sleeving, playtesting, cutting cards, and even more playtesting
harm to one will have consequences to the larger whole
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 power, toughness, types, color, and so on
If your idea of an elf deck is heavily rooted in these denizens of Middle-earth, Galadriel of Lothlrien is the Simic commander for you
Players invest time, money, and a little of their soul into their decks, and they want to feel like they had an impact on the game
Then, draw new cards until you have 7 cards again