Tarkir: Dragonstorm Play Booster boxes include 30 Play Boosters, with individual Play Booster contents listed as follows: 
14 Magic: The Gathering cards 
7 Commons 
3 Uncommons 
1 Wildcard of any rarity 
1 Rare or mythic rare card 
1 Traditional foil card of any rarity 
1 Land card 
1 Art card or non-foil double-sided token