Stealth Fiend, Koumaaun

[AUTO]:When this card is placed on (RC) from hand, [COST][Counter-Blast 1], choose a card from your opponent's bind zone, and you may put it on the bottom of their deck. If you did not put a card, choose up to one unit card with "Stealth" in its card name and grade less than or equal to your vanguard from your bind zone, and call it to (RC).