The Magic: the Gathering (MTG) set Khans of Tarkir (KTK) was released on Sep 26th, 2014. It includes 14 token cards.
Khans of Tarkir is an expansion set in the Khans of Tarkir block. An expansion set in Magic: The Gathering is a pool of cards released together and designed for play in the same environment. Standard cards and tokens in a set can be obtained at random through booster packs. Sometimes a set will contain promo tokens that are given away as prizes at Friday Night Magic (FNM) or special pre-release events.