Pack

A Pack is a package of random Magic Cards from a particular expansion set, designed to add to a player's collection.

Contents
In Magic: The Gathering Arena there are two types of Pack: regular Packs and draft Packs.

Regular Packs can be bought from the Store, earned from Weekly Rewards, or won as prizes in Events. A regular Pack contains 8 non-repeating cards: 1 Rare or Mythic Rare, 2 Uncommon, and 5 Common rarity cards. Each card has a chance of being replaced with a wildcard. The exact drop rate for wildcards will not be revealed until Public Beta [1].

Draft Packs are packs used for drafting in Quick Draft. They contain 14 non-repeating cards: 1 Rare or Mythic Rare card, 3 uncommon, and 10 Common cards. Unlike Regular Packs, these packs do not contain wildcards.

Cost
Individual packs can be purchased with Gold and bundles of packs can be bought with Gems. The price of regular Packs in the store are:
 * 1 pack     -   1000 Gold.
 * 3 packs   -     600 Gems.
 * 6 Packs   -   1200 Gems.
 * 15 Packs -   3000 Gems.
 * 45 Packs -   9000 Gems.
 * 90 Packs - 18000 Gems.

Draft entree costs 5000 Gold and gives 3 draft Packs plus prizes.

Pity Timer
Regular Packs have a pity timer. A pity timer guarantees that a wildcard of a particular rarity is guaranteed after opening a certain number of Packs. Given the guaranteed wildcards from purchasing 90 Packs [2], the pity timer can be deduced as 5 Packs for common and uncommon Wildcards, 15 Packs for Rare wildcards and 30 Packs for Mythic Rares.