Genesis Dragon, Amnesty Messiah (EXRRR) (DZ-BT06/EX05EN) [DZ-BT06: Generation Dragenesis]

(This card cannot be in your main deck) [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. (When you stride, your original vanguard becomes a heart card, and this unit gets that card's [Power] and card name. At the end of the turn, return this unit face up) [AUTO](VC):When this unit attacks, [COST][Counter-Blast 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 [Power] +5000 until end of turn for each card unlocked by this ability.