Not one hair off the axis: choose one of your pieces except the king or queen, and a perfect mirror copy of it materializes on the file-reflected square (a-file to h-file), if that square is empty. Once.
You draft Middle Part in Buff mode. Activated: you choose when to use it, and using it is your move for that turn.
As a pieces card, it summons, revives, promotes, or converts a piece.
“Split dead center. Both sides immaculate.”