Uncommon Excavation Cantrip on Delve Loot Doesn't Promise Riches
A new cantrip appearing on Delve loot promises rare treasure, but don't be fooled into thinking you'll strike it rich! Excavation can be found on a wide variety of uncommon drops throughout Delves, such as the Brilliant Beacon and Torchbearer's Greatcloak, but despite the name, this «bonus treasure» is simply a stat buff, without any impact on the actual treasure found throughout Delves or the rest of Khaz Algar.
The buff comes in three values: Uncommon Treasure, Rare Treasure, and Epic Treasure, granting a minor amount of primary stats.
Unfortunately, this modifier does not seem to appear on any higher item level gear, reducing it to mere novelty, rather than a set you might actually build for delving, though it could be an interesting way of adding a little bit more build customization if these or similar modifiers were to appear on the higher quality end-of-delve loot in the future.
For the time being though, the real treasure is simply the gold you get from giving these items to a vendor instead.
. Read more on wowhead.com
