Holy Dragon, Crystaluster Dragon (RRR)

"[Stride]-Stride Step-[COST][Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them]
[Stride] this card on your (VC) from face down.
[ACT]{(VC)}[1/turn]:[COST][Turn a card from your G zone face up], and until end of turn, this unit gets all of the original abilities of one of your heart cards.
[CONT]{(VC)}[Generation Break 3]:If you have three or more grade 2 or greater units, when your opponent would call from his or her hand to (GC), he or she must call three or more at the same time."