153 possible cards 1 per box = you need ~153 boxes (6.3M / ~$43,000) to statistically expect one specific Master Ball mirror
Now, these eldritch Creatures have an excellent typal Commander that allows you to build across the color spectrum, and the ongoing popularity of Eldrazi means that Ulalek is likely to stay relevant for quite some time
So I avoided cards with casting costs involving two of a single color where I could (though Bruna, Light of Alabaster and Yomiji, Who Bars the Way were just too good not to include and I adjusted my mana to compensate)
Theyre some of the most popular mana rocks, and for good reason: theyre efficient, they give you two colors, and they dont cost you any life to use
The sets story finds the plane in turmoil as its perpetually sunlit aspect (Lorwyn) and its grim, nocturnal counterpart (Shadowmoor) are no longer cycling, but are instead bleeding into one another