Poison Sickle Mutant Deity, Overwhelm

[Stride]-Stride Step-[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 from face down.
:[Counter Blast (1) & Choose a face down card from your G zone, and turn it face up] Draw up to the same number of cards as the number of your opponent's rear-guards, and if the number of your opponent's rear-guards is one or less, this unit gets [Critical]+1/Drive+1 until end of turn.
Generation Break 3 Dark Device :All of your units get +2000 for each face down card in your opponent's damage zone.