A Khans of Tarkir set cube. Designed to roughly simulate drafting KTK.

Originally, I had strict rules about building packs by mimicking rarity counts, but I found that ultimately it was fine to just mash them all together and have it be a more focused 360 card count cube.

While not always the case, I still followed a structure of max 3 of a common, 2 of an uncommon, and 1 of a rare or mythic.