Up to 4 rares
1 foil in every pack
1:4 packs contain a card from The List (which we'll be revealing in full next week)
There are some cool alternate frames, too (detailed below in the Draft Booster section)
1 art card (1:20 are foil-stamped)
1 token/ad card
12 game cards total
Set Boosters are available individually or in booster displays of 30 packs.