Where red often pressures life totals directly and green can make attacks awkward through resting effects, blue tends to win by controlling tempo, bouncing characters, stacking the deck, drawing cards, and turning the opponents board into something they have to keep rebuilding
Since [Zendikar Rising]s a land set, one option is always a land, but it lets the other side be an effect that might be too narrow to play by itself. That meant the Magic team could create more cards that both fit Zendikars theme, but also created chances for niche abilities
Well Rested Auras have always been a high-risk, high-reward card subtype, and Well Rested fits the bill perfectly
In general, MTG sets are a great way to find a bunch of cards tied into a unified theme
2 for instance
The Gold Saucer Rating: 3/10 A land thats an artifact sacrifice outlet is a nice card to have around for the sacrifice deck, but running a colorless land is too high a price to pay for any other deck