Rikudo Stealth Dragon, Gounrakan (RRR)

[Stride]-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] Stride this card on your (VC) from face down.
[AUTO]:When this unit is placed on (VC), your opponent chooses two of his or her rear-guards, and binds all of his or her rear-guards other than those units face up. If three or more cards were bound, your opponent chooses two cards from his or her bind zone, and puts them into his or her drop zone. At the end of the turn, your opponent put the cards bound with this effect into his or her hand.