counter sense confusion

　この呪文をかけておくと、魔法のアイテムや呪文によって自分もしくは自分が身につけている物が探知された場合、そのことがわかります。
　This spell will let the caster know if they or something they are wearing is being detected by a magic item or spell.
同時に相手が使った呪文やアイテムの種類 (効果)、かけた人物が誰かなども明らかになります (名前がわかるのではなく、相手の姿形がわかるのです)。
At the same time, the Type (Effect) of the spell or item being used and the identity of the person who cast it will be revealed (not their name, but their appearance).
その後、“カウンター・センス“ の呪文の効果は消滅します (もちろん、かけ直すことはできます)。
After that, the effect of "Counter Sense" will disappear (of course, it can be recast).

　この呪文の対象となるのは種別が「探知」となっている呪文と、同種の効果がある「遠見の水晶球」をどのアイテムです。
　The target of this spell is any spell with the "Detection" type and any item that has the same effect as "Crystal Ball of Distant Sight".
　また、探知に使われた呪文やアイテムの効果は、その持続時間がいかなるものであろうと “カウンター・センス“ が作動して1ラウンド後に消滅します。

つまり1ラウンドの間は、相手の使った探知の呪文やアイテムの効果は正常にはたらき、その間の情報は相手に知られてしまうわけです。

こちらが “カウンター・センス“ の呪文を使っていたということも露見します。

　この呪文をあらかじめ複数回かけておき、かけ直しせずに何度も逆探知を行なうことはできません。


[12:29:40] <~bluesun> 同種の効果がある「遠見の水晶球」をどのアイテムです。 < this looks like it has a typo, をどのアイテム. maybe などのアイテム
[12:47:33] <~bluesun> After casting this spell, if you/something you are wearing is detected by a magic item/spell, you will learn that.
[12:47:33] <~bluesun> You will also learn the type (effect) of the spell/item used in the detection, and who did the detection (not their name, but their appearance).
[12:47:33] <~bluesun> Afterward, the effect of "Counter Sense" will terminate (naturally, you can cast it once again).
[12:47:33] <~bluesun> This spell can sense spells with the type "Detection", and any items with the same effect, such as "Crystal Ball of Farsight".
[12:47:33] <~bluesun> Also, no matter what duration the detection effect of the spell/item may have, it will be terminated 1 round after "Counter Sense" activates.
[12:47:34] <~bluesun> In other words, for 1 round, the detection spell/item will still work normally, and the user will know what happened in that duration.
[12:47:36] <~bluesun> They will also learn that you have used the spell "Counter Sense".
[12:47:37] <~bluesun> You cannot cast this spell multiple times ahead of time, to be able to (??? counter detection ???) multiple times without having to recast it.
[12:49:15] <~bluesun> unsure about the last line's 逆探知 too. Usually 'tracing' like tracing a phone call. I thought it didn't fit, but maybe it does? They're trying to detect(sense) you, and you're 'tracing back'(counter-sensing) and learning about them instead.
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