zhulie999 要求是牌面向下，那么意味着对方是看不到这张牌的具体情况是吧？问题来了，如果对方看不到这张牌的具体情况，那我岂不是可以随意支付上场的费用喽或者对方也可以类似这样做；还是说这个就看自觉了，实事求是的按具体费用和其他的部队、战术卡一样的正常支付费用，但是是牌面向下的上场？
outlawarmy 每回合打一张developmemt无需支付费用 建议还是多看看rule During the capital phase, the active player also has the option of playing a card face down as a development in any one of his zones. One development can be played by the active player each turn.
