My opinion of this set is mixed.
The Pros: It comes with two shadow knights, a rainbow knight and the King Mathias minifig(awsome) That's a great selection of minifigs.
The Cons: When I look back, I would never spend thirty dollars on a set with so few bricks. The design was too juniorized compared to the Shadow Knight siege tower. The colour scheme is questionable, the mega fig shields are stupid and corners are cut everywhere. For only a few dollars worth of bricks, the set would have been much better.