Set boosters are a new product for players and Magic the Gathering fans who love to open boosters. 

A couple features: 

At least one foil in every pack. These can be any rarity, so this is one of several places where players can get a rare or mythic rare in a single Set Booster.

Chance of multiple rares. Between wildcard slots, the rare slot, and the foil slot, there a several ways to get more than one rare in a Set Booster.

Chance at The List*. 25% of the time, instead of an ad or token card, Set Boosters contain a card from The List* — interesting cards from anywhere in Magic’s history, printed as they appeared (including art, frame, and expansion symbol) plus a small Planeswalker symbol in their lower-left corner.

Each Set Booster Display contains 30 Set Booster Packs of 14 cards:
• 1 Zendikar Rising art card
• 1 Zendikar Rising full-art basic land
• 6 Zendikar Rising thematically connected commons and uncommons
• 1 Zendikar Rising "head-turning" card
• 2 Zendikar Rising wildcard rarity cards
• 1 Zendikar Rising rare or mythic rare
• 1 Zendikar Rising guaranteed foil card
• 1 token, ad card, or card from The List*

For more details on the new set boosters, check out this article!