Well, I am a very risk averse person, so I wouldn't ever risk my NX on a scroll drop, because the rate is so low. If I wanted NX, I'd go somewhere with good mesos, then go buy the scrolls in the FM, then sell them in the MTS.
But if you're set on getting scrolls directly, best bet would probably be to get the card late at night in the US time zones and go area boss hunting.
EDIT: If you want a normal normal monster... I'm not sure. As I said, I don't count on scrolls dropping, because the only scroll drops worth over 5m I've got in the entire time I've played Maple were 2 Overall DEX 60%s I got from area bosses.
Good luck, though. =)
But if you're set on getting scrolls directly, best bet would probably be to get the card late at night in the US time zones and go area boss hunting.
EDIT: If you want a normal normal monster... I'm not sure. As I said, I don't count on scrolls dropping, because the only scroll drops worth over 5m I've got in the entire time I've played Maple were 2 Overall DEX 60%s I got from area bosses.
Good luck, though. =)