Black and red were pretty isolated from the enchantress decks, making them unattractive to support, but Journey into Nyx has given black some great constellation cards that bring it into the fold (red got, umm, Forgeborn Oreads?)
This is a double-edged sword: The impact is diminished, but you can fill your deck with creatures that have strong ETB (enter the battlefield) triggered abilities and reuse them
As is customary, the most expensive cards from Gym Challenge are first-edition versions
At the same time, printing on a fake card will look chaotic and messy
Sorrow's Path's main effect is amusingly strange
This will typically add to the board up front and then draw you a card, and it has long-term value engine potential