The Magic: the Gathering (MTG) set Zendikar (ZEN) was released on Oct 2nd, 2009. It includes 11 token cards.
Zendikar is an expansion set in the Zendikar 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.