The Magic: the Gathering (MTG) set Dragons of Tarkir (DTK) was released on Mar 27th, 2015. It includes 8 token cards.
Dragons 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.