Sterling Witch, MoMo (V-SS05/S03EN) [Premium Collection 2020]

"[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. [AUTO]{(VC)}[1/turn]:When it attacks, [COST][[Counter-Blast 1] & turn a card from your G zone face up], discard up to three cards from your hand, and for each card discarded, three of your front row units get [Power]+10000 until end of turn. If you discarded three cards, at the end of that battle, [Stand] this unit, and it gets drive -2."