Genesis Dragon, Amnesty Messiah

(This card cannot be in your main deck) -Stride Step-[Choose one or more cards from hand with the sum of their grades being 3 or greater, and discard them], and this card on your from face down. (When you stride, your original vanguard becomes a heart card, and this unit gets that card's and card name. At the end of the turn, return this unit face up) :When this unit attacks, [ 1 & turn a card from G zone face up], choose any number of any player's locked cards, and unlock them. Choose one of your rear-guards, and it gets +5000 until end of turn for each card unlocked by this ability.