Conquering Supreme Dragon, Closer Dragon

-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] this card on your from face down. :When this unit is placed on , retire all rear-guards of all fighters, bind all of the cards in your opponent's drop zone face up, and until end of turn, this unit gets ":All of your units get +2000 for each card in all fighters' bind zones.".