1. If I activate "Magician's Navigation" while I don't have a "Dark Magician" in my hand, can I still summon a Level 7 or lower DARK Spellcaster from my Deck?
2. What happens if I MST an "Xyz Reborn"?
3. What happens when I control "D/D/D Oracle King D'Arc" and my opponent controls "Darklord Nurse Reficule"?
4. What happens if both "Masked HERO Dark Law" and "Imperial Iron Wall" are on the field?
5. What happens when a monster that will be banished when it leaves the field encounters Imperial Iron Wall?