I am a little confused about duplicate unique characters.
The rules of play manual states: "if one of your unique cards is about to be killed, discarded from play, or returned to your hand or deck, as a triggered "response" effect, you may discard an attached duplicate to save the unique card from being killed, discarded, or returned to your hand or deck."
Does this mean that a duplicate may only substitute for the unique character during "response" effects? What about when a unique character would be killed as the result of challenge resolution? or a character trait such as "deadly"? or a plot card, such as "Valar Morgulis"?
It seems too powerful to have - for example - three Drogons stacked out there with him only being killed if my opponent can manage to kill him 3 times thoughout the game.
AM i missing something? I love this game btw and want to make sure I am playing it correctly.
Thanks!

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