Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
AbigailII: Maybe the choice is to "Reveal" the ghost rider at the end of the turn before the opponent plays, thereby blocking. This could be used to block check for example. Subsequently moving the piece would give the option to become invisible again.
(esconder) Jogue um jogo em tempo real com um adversário que esteja online. Para o conseguir ambos devem seleccionar a opção "Jogar e ficar nesta página" como opção por defeito e depois refrescar a página com a tecla F5! (TeamBundy) (mostrar todas as dicas)