>Please let me know about your card ideas
- Make a piece invulnerable this turn
- Make a piece move like another piece this turn
- Allow piece to jump over others like a knight this turn
- Allow castling
- Move any piece from certain part of the board, e.g. from you side
- Make a board square un-passable this turn
- Mark the piece and a separate card 'allow moving any marked piece'
... etc, etc. Ideas are easy, implementing / balancing is hard :)