The Eternal Masters booster box contains 24 packs of 15 cards each. 

Take a step outside time with Eternal Masters. This exciting set lets you draw on some of the most sought-after cards from throughout the history of Magic—some with new artwork—to enhance your Cube or your favorite Commander, Vintage, and Legacy decks.

Eternal Masters is designed to be a unique and enjoyable Draft experience, much like Modern Masters. It will not contain cards from the Reserved List, but it will feature many exciting Eternal staples, including: Force of Will and Wasteland.

Eternal Masters contains 249 cards with a release date of June 10th. MSRP is $9.99 a pack.