Genesis Dragon, Trans-else 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 a vanguard, 1, unlock all of your locked cards, choose up to the same number of your opponent's rear-guards as the number of face up cards in your G zone, and lock them. Choose the same number of your rear-guards as the number of face up "Genesis Dragon, Trans-else Messiah" in your G zone, and they get +5000 until end of turn.