Demon Stealth Dragon, Shiranui "Oboro"

:At the beginning of your ride phase, you may choose a card from your opponent's drop zone. If you do, your opponent calls that card to , and at the end of that turn, retire that unit. Dominate choose up to one of your opponent's rear-guards, and dominate it, until end of turn, it gets +4000, and attacks your opponent's other unit.