Treasure

Treasures can be opened to find cosmetic items or sets. Treasures are obtained through the Dota 2 Store, charms, or the item drop system. Each treasure can be opened once to receive one or more items from its listed contents. Available treasures can be viewed in game under the Treasury tab.

Rarity Tiers
Each treasure comes with a list of Standard drops, as well as Very Rare drop(s). Some treasures also contain Extremely Rare drop(s), often an courier, which occur at approximately 1-2% chance. Item rarity does affect drop chances.

Duplicates
Opening several of the same treasure will guarantee a different item will be received each time. This means that previously received items will not be unboxed again unless all items have been unboxed. This rule does not apply to Very Rare or Extremely Rare drops. After all standard items have been received, future treasure openings will yield random items from the droplist.

Multiple Drops
Some treasures, such as 37 - Ancient Scroll Case, always drop multiple items.

Trade Restriction
Items unboxed from treasures cannot be traded or marketed for three months. However, restricted items can be gifted once to a friend. This restriction does not apply to Extremely Rare drops.