In this week’s PTR build, we believe we’ve discovered the mechanism by which players will be able to trade up lower tier crests into higher level versions, using new consumables containing 15 Wyrms, Drakes, or Aspects Crests used for upgrading gear in Dragonflight Patch 10.2.
Each bag contains 15 crests, which under the new system is enough for one upgrade (e.g. from Hero 1/6 -> Hero 2/6).