You can tailor your deck differently of course, just know that theres a bit of a stigma against superfriends decks
These Leaders are so powerful theyve been banned
You can pick an avatar from a selection of the games established characters, such as Jaya Ballard, Liliana Vess, or Teferi (so is somebody actually going to cast Idris Elba as Teferi, or?), but theres no attempt to depict you as a newbie planeswalker or something, aside from some slight interactions with named characters during the tutorial
Put a -1/-1 counter on each creature you don't control
Related While some cards hold serious power in the game still, like the Moxen, a lot of outdated cards are still limited from printing
Let's not overcomplicate things, if you have two dragons, and they both get indestructible and grow each turn, isn't that worth 5 mana