Summoner’s chess

It is like Crazyhouse, but you get your pieces go to “The Void” after it has been taken. To get it back, you’d need to sacrifice your own piece or use the points you have from taking your opponent’s pieces with the equal amount of points just by taking it out and sending it to “The Void”. The piece that was taken by your opponent would then be put on the board, wherever you like, as long as it isn’t check. If there are excess points, you can either save the points for later, or use it on something else. Also, retrieving a piece doesn’t take up your move. An example would be: you lost your queen, and you want to get it back. You sacrifice a rook and a bishop + 3 points you already have and you got your queen back. You also got your pawn and you save the last point for later.