When Hungry Ghost got buffed, I wanted a deck that can fuel Hungry Ghost. I've always loved snakes and they are a great way of fueling it's crazy growth. Hungry Ghost is a spirit, so nine-tailed can bring it back.
I really enjoy the purple splash as well as it is great against aggro. Both NM and RC help greatly. 2/3 of the time Night Market will either give you a free cobblejack or let you div for an enchantment.
Scourge is a flex card. It could easily be something different, like Odinthrone if you think you need more draw. Scourge is in there for the games where you do not get your snakes early. Scourge on Goliath's web is so good as well.
The deck is a lot of fun. It's probably not as good as Laezar's champ deck, but it might be better against aggro. It's still in testing so I'm sure its not quite optimized.
Also, a few years ago, the ghost snake was discovered in Madagascar. The researchers named it Madagascarophis. But they call it luu luu, which means ghost in Malagasy. The more you know...