J'ai trouvé ça:
(3.29) Unique Cards and Changing Control
You may not play, put into play, or take control
of a unique card already in play that you own
or control (except for putting a duplicate on
a card that you own and control), or that is in
your dead pile.
Thus you cannot take control of a unique
character that you already have in play. You
cannot play a unique card if your opponent has
taken control of another copy of that unique
card that you own.
Donc je ne peux si la carte est dans MA dead pile, donc dans la sienne je peux?