關於和平護符、劍刃障壁以及庇護之翼這三招的使用限制

[Frediness]

和平護符、劍刃障壁以及庇護之翼都能夠阻擋對手的攻擊，但如果對方是偷襲呢？比方說躲藏起來放冷箭之類的，那種無法察覺的攻擊是否還能用這三招擋掉？
再者，如果這三招無法格擋偷襲那類事先無法察覺到的攻擊，那是否可以擴大解釋為只要是陷入"措手不及"狀態(比方說中了對方佯攻技能，失去了敏捷加值)的人，就無法使用這三招擋下攻擊了呢？

[逆神猪]

措手不及中没有直觉动作，见RC，ACTION
An immediate action consumes a tiny amount of time. However, unlike a swift action, an immediate action can be performed at any time during a round, even when it isn't your turn. Using an immediate action on your turn counts as your swift action for that turn. If you use an immediate action when it isn't your turn, you can't use another immediate action or a swift action until after your next turn. You can't use an immediate action when you're flat-footed.

[Frediness]

感恩！
手冊看了那麼久，還真沒注意到這一段！

[meekzerg]

那請問是否在規則書中使目標失去敏捷加值的方法都視為措手不及呢？
例如：跌倒

[逆神猪]

no,只有声明陷入措手不及的情况，才陷入措手不及，AC上失去敏捷加值并不意味着一定措手不及，反之亦然，前者如虚招，后者如直觉闪避
另外，跌倒完全没有失去敏捷加值，更没有措手不及，关于跌倒状态请查阅phb