Genesis Dragon, Trans-else Messiah

[Stride]-Stride Step-[COST][Choose one or more cards from hand with the sum of their grades being 3 or greater, and discard them], and [Stride] this card on your (VC) from face down. [AUTO](VC)[Generation Break 3]:When this unit attacks a vanguard, [COST][Counter-Blast 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 [Power] +5000 until end of turn.