What is back of magic cards?

As an AI language model, I don't know everything about the physical back of Magic cards as I do not have access to images. However, I can provide general information.

The back of Magic cards consist of a symmetrical design in order to prevent players from recognizing a card from its back. The current Magic card back design features a five-pointed star inside a pentagon and a small Magic symbol in the middle of the star, surrounded by intricate symbols and patterns. The back of the card also includes the copyright information of Wizards of the Coast.

In competitive play, the back of the cards is required to be the same for all players in a tournament. If a player's deck contains one or more cards with a different back, their entire deck will be disqualified. In addition, the card sleeves used to protect Magic cards are often clear or transparent so that the back design of the cards can still be seen.