Supreme Heavenly Emperor Dragon, Zanbust Dragon (V-SS05/S08EN) [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. [ACT]{(VC)}[1/turn]:[COST][Turn a card from your G zone face up], retire all of your opponent's rear-guards, and all of your grade 3 or greater units get [Power]+10000 until end of turn."