User blog comment:Slark Kent/Katana World Deck - Simple Task/@comment-11231449-20140429215002/@comment-24870933-20140430123703

I know they can't be used from Shinobi Scrolls but if you have Moon Fang and your versing a Magic World deck (they usually have low amount of impacts) there is next to no need for it and can be used for shinobi scrolls to get a chance at a more useful card. The shinobi scrolls are more to gain more control over your opponent opponent without having to wait to gauge the un-needed to draw cards.

If that makes sence.