Happiness-spinning Nanda Dragon King D-PS01/SR02 SR

[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], reveal cards from the top of your deck equal to the number of face up cards in your G zone +2, call all of the normal units revealed from among them to (RC), put all of the trigger units revealed from among them into your hand, and shuffle your deck. Then, activate the trigger effects of all of the revealed cards.