/// <summary>
/// 墓地追加方法。并触发进墓效果。
/// </summary>
/// <param name="index">下标</param>
/// <param name="card">待添加卡牌</param>
public override void Add(int index, AbstractCard card)
{
base.Add(index, card);
card.OnGrave(Owner, card.Target);
}