Text: "Response: After an opponent plays an attachment card,discard Scurvy Cutthroat from play (cannot be saved) to discard that attachment from play."

Scenario: I have Core Set Melisandre (Power on opponents' characters does not count towards their total power.) in play, and her ability is preventing my opponent from winning. My opponent plays Milk of the Poppy on Melisandre. I respond by discarding the Cutthroat. Is there a moment in time where my opponent wins the game? In other words, what does "after" really mean?

Scenario: I have Tommen Baratheon (STR 1) out, then my opponent plays Flame-Kissed (If attached character has no other attachments, attached character gets -2 STR and is killed if its STR is 0) on. I respond by discarding the Cutthroat. Does Tommen die? What if he had a duplicate - can I save poor Tommen?

jmccarthy said:

That also means that the attachment will be moribund after using the Cutthroat to discard it, so even after it is "discarded," the effect will persist until the end of the action window. In your Mel/Milk scenario, the Cutthroat will both come too late (she's already blank when you use the Cutthroat) and not be definitive enough (the attachment persists, keeping her blank while the attachment is moribund after the Cutthroat is used).

jmccarthy said:

A dupe isn't enough to save Tommen from a burn effect. Almost nothing is. But that's another topic.

So, is there ever a point in which an effect from the attachment is never enforced through some kind of a canceling effect?

Bomb said:

The closest you can come is a Shadow attachment. There is nothing that can stop it from coming out of Shadows in the first place (once the controller pays the cost to do so), but you can cancel the "Response: after this card comes out of Shadows, attach it to..." effect on something like Dragon Skull. Shadows are a special case, though.