if you want to save a character from being killed you just have to discard a duplicate..
if so, a copy of that card it is then put to his/her discard pile.
Q: what if you used VISENYA'S HILL while the copy of the card that you have put into dead pile from your discard pile was still in play? Can you still play that card? Or it automatically placed to dead pile or invalid? Just cancelled event cards or other cards, if its cancelled itll go to discard pile.