Enma Stealth Dragon, Kingoku Tenbu

(This card cannot be in your main deck) (Released when both players' vanguards are grade 3 or greater!)-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 card strides, it gains the power and card name of one heart. At the end of the turn, return it face up) Dominate-:At the beginning of your battle phase, choose up to one of your opponent's rear-guards, and dominate it, and attack your opponent's other unit. (You may use its abilities if you pay the cost)