Overall, it seems like the new utility of Dark World presented here is quite solid, and while it wouldn't bring them quite on par with the big ones, (aside From maybe the Xyz that needs fixing), it puts them with a solid chance, and a new toolbox that takes them a few places.
While it would take a lot of calculations to give hard numbers (because we'd have to look at how much Shadows over Innistrad blockthe only non- Masterpiece block in Standardis actually being played), it wouldn't be a bit surprising to see an average deck price of around $250 after rotation this fall
Demonstrator that you work with, I would love to earn your business and become YOUR demonstrator
If that wasn't enough, the existence of Zombie World in the deck means you can play Doomking Balerdroch as a boss monster that provides an incredible amount of negation and disruption if your opponent doesn't have the right cards to out it
It it's greater, you may pay , where X is the difference