Response: After a character card is discarded from an opponent's deck, put that card into play under your control. At the end of the phase, return that character to its owner's discard pile.
Does this mean the card is returned to the owners discard pile (At the end the phase) regardless of what happened in between - i.e. if it was killed, over even removed from play
Cards typically say "if it is still in play" - so I don't know if this one is different to the norm