Dota2.com schrieb:

The International 2018 Collector’s Cache has arrived. Available exclusively to Battle Pass owners for $1.99, and brimming with 14 subterranean-themed item sets—and three rare sets—the Collector’s Cache is ready to unearth a rich seam of heroes suitably styled for this year’s event.

Unboxing fourteen of these treasures automatically grants you 27 Battle Levels. As always, the chances for a rare drop increase with each treasure you open, and each purchase contributes directly to The International prize pool.

As in years past, this treasure is only available for sale until The International concludes, and the items inside are exclusive and cannot be purchased elsewhere. Each set can, however, be gifted once or recycled for 2,000 Battle Points, and the Ultra Rare is marketable.