In the latest Dragonflight build, the Adventurer’s Guide offers a new feature. This allows very rare raid boss loot to be displayed separately. This is practical since it will allow you to easily find the most powerful objects.
Currently, only the Vault of the Incarnations benefit from this novelty. It does not exist for dungeons of the dragon islands nor for old raids, whether in Shadowlands or previous expansions.
On the screenshots below, you can see the existence of 4 very rare items in the Vault. If we sort on Eranog, we see that he has one for him. These are slightly more powerful items, with a higher ilvl than the others.
