Four Kings Chess

Athens: You have the power of the sea. Your bishops can move to any open space on the board where they won't put an opponent in check. You may not use this ability two turns in a row.

Britain: You have the power of democracy. Ministers can move like kings and like knights. They cannot move like knights two turns in a row. If you have only one minister on the board, it is royal.

Mongols: You have the power of training. Your pawns can move one square horizontally or vertically and can capture one square diagonally in any direction. Your pawns may promote either vertically or horizontally, and may promote to any standard chess piece, provided that you have no more than one queen, two rooks, two bishops, and two knights.

Jerusalem: You have the power of castles. At the end of each of your turns, you may choose a non-royal piece you control that has not moved that turn. Until the start of your next turn, the chosen piece may not be captured, except by royal pieces.