Scout of Darkness, Vortimer

:When this unit is placed, look at the top seven cards of your deck, reveal up to one "Spectral Duke Dragon" or "Black Dragon Knight, Vortimer" from among them and put it into your hand, and shuffle your deck. :When this unit is retired from by your card's ability, [put this card into your soul], and one of your vanguards gets +5000 until end of turn.