These cards are often red and black
But the creative conceit we liked for Zendikar was that it was an "adventure world," where the setting held many riches but was hostile to its inhabitants
And fourth, we want to make cards that present a challenge to players so that a select few will rise to that challenge
At the casual level, you can up the basic land count, or add more ways to get what you need like Evolving Wilds, Terramorphic Expanse, Ash Barrens and landcyclers
Number 96: Dark Mist likely also qualifies as this
That would give us an expected value that looks something like this: As you can see, when you throw the Ultimate Box Topper into the mix (even priced conservatively), the expected value of an Ultimate Masters box looks even better, coming in at just over $425, and even discounted 15%, it's still $363nearly $100 more than you'll pay for a sealed box