Millennium Puzzle

Planeswalker - Duelist you control or in your graveyard can not be exiled except by this card.
{2} Exile target Planeswalker - Duelist you control
or in your graveyard.
{3}{t} Put into play target Planeswalker - Duelist
exiled by this card.
If this card is destroyed, put all card exiled by
this card into your graveyard.