
- Adventurer Crest – Outdoors
- Veteran – LFR, Heroic dungeons, Delves 1-5
- Champion – Normal Raid, Mythic +2-3, Delve 7-10
- Hero – Heroic Raid, Mythic +4-8, Delve 11
- Myth – Mythic Raid, Mythic+9s
Previously, there were four types of overlapping crests, with Weathered covering early Veteran upgrades, Carved upgrading Veteran and Champion, Runed overlapping Champion and Hero, and Gilded covering late the Hero and Myth tracks.
Excerpt from u/Gannan308’s upgrade guide on Reddit.
In Midnight, however, there are five crests progressing from progressing from Adventurer to Myth, just like the upgrade tracks they relate to. In a recent Q&A, Valorstones were confirmed to be removed entirely in Midnight, and Blizzard developers have also indicated that the upgrade tracks themselves would be streamlined, with heroic-tier items only using heroic crests, and so forth.
Its unclear whether certain activities will still drop higher tier crests, such as current end-tier Heroic bosses dropping Gilded crests, but overall this should make it much easier for players to keep track of what currency they have and what gear it relates to.