Ambush Demon Stealth Dragon, Onibibu Radar

-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 , choose up to one card from your hand, and call it to . Choose one of your rear-guards, and until end of turn, that unit gets +2000, and ":This unit can attack a vanguard from the back row.".