Boosterbox Khans of Tarkir.
The five Khans and their clans are fighting for dominion over Tarkir. Each clan represents an aspect of the dragons they eradicated long ago. Do you lead the swift Mardu, the relentless Temur, the cunning Jeskai, the persistent Abzan or the cruel Sultai to victory? The battle of the clans is fought at special locations: the fetch lands! These popular lands make Khans of Tarkir legendary! Khans of Tarkir is the first set from the Khans of Tarkir block and consists of 269 cards.
A Booster Box Khans of Tarkir consists of 36 boosters. Each Khans of Tarkir contains 15 Magic: the Gathering cards.

Note: the description is machine translated and might contain errors.