:
When this unit is placed on a
, if you have a «Link Joker» vanguard, and your opponent has a locked card, you may pay the cost. If you do, your opponent chooses one of his or her
, and put the top card of his or her deck into that
face down as a locked card. (The locked card is turned face down, and cannot do anything. It turns face up at the end of the owner's turn.)