Demon Stealth Dragon, Shiranui "Oboro"

:At the beginning of your ride phase, choose up to one card from your opponent's drop, your opponent calls that card to , and at the end of that turn, retires that unit. Dominate-:When your G unit , choose up to one of your opponent's rear-guards, and dominate it, until end of turn, that unit gets +4000, and attacks your opponent's other unit.