Omniscience Dragon, Afanc (G-TCB02/003EN) [The GENIUS STRATEGY]

[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 (VC) from face down. [ACT](VC)[1/Turn]:[Counter Blast (1) & Choose a face down card from your G zone, and turn it face up] Choose any number of your rear-guards, and until end of turn, they get"[CONT](RC):This unit cannot be retired by card effects.", and for each rear-guard chosen with this effect, this unit gets [Power]+4000.