var list = lib.linked.slice(0);
list.remove('kami');
list.push('cancel2');
player.chooseControl(list).set('prompt', '选择获得一种属性的杀');
var cards = [];
var card;
card = get.cardPile(function (card) {
return card.nature == result.control;
});
if (card) cards.push(card);
player.gain(cards, 'gain2');

分步