One of the first things you need to know about a booster pack from the Magic: The Gathering, is that it only contains 12 cards. MTG gets its expansions mainly through booster packs.
The pack here is for the game expansion called Kalheim. This game expansion was inspired by Vikings and Norse Mythology.
Here's a breakdown of what you may find in a booster pack like the one here:
- 1 snow land (15% chance of foil)
- 1 rare or mythic rare
- 1x snow common/uncommon, showcase uncommon, or theme booster rare
- 1x foil of any rarity
- 1x wild card of any rarity
- 7 assorted common or uncommon
- 1 art card
- 1 token/ad or special card from Magic's history
However, the cards that you want to get are 20 that are exclusive to the booster packs. These are 5 rares and 15 uncommon cards.