Booster Theros.

A number of powerful gods rule the world of Theros. Walled cities are threatened by squatters, minotaurs, hydras and other monsters. Heroes, strengthened by their dedication to the gods, come from all over the world to defeat these monsters. The Theros set tells the story of this world with new cards, including legendary divine creatures, powerful enchantments and brand new Planeswalkers!

Theros is the first set in the Theros Block and consists of 249 cards.

A booster Theros contains 15 Magic: the Gathering cards which 1 rare, 3 uncommons and 11 commons. In approximately 1 in eight boosters you will find no rare, but a mythic rare!

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