So, this seems like a bit of a mess. You are trying to adapt the game's mechanics to the in-game universe's lore, which isn't going to work too well. A yugioh RP works because the story is about people playing the yugioh card game. In magic, since the lore and the playing of the game are separate, you either make an RP about people playing the card game (which would be kind of boring), or an RP that takes place in the universe, but doesn't mention the card game.

So, it might be best to remove the mentions of libraries and planeswalker abilities, as they pertain to the card game, and make a more usual character sheet, with a section for describing magical abilities and such. 

It would also be nice to focus the plot on a specific conflict/plane, or something, so that we don't just half of the characters on completely random planes doing who knows what.