Uptrade

Too many Artifacts of a single rarity and still no Gold Artifact.? 

That is not a problem because you can easily trade using the Uptrade feature. To do so, go to your Vault and select the Collection you wish to Uptrade. Whether you want to complete a Collection or Uptrade to a Golden Plate, it’s easy. 

To Uptrade, choose six Artifacts from one rarity level, such as Blue. It doesn’t matter whether you select the same Artifact six times or different Artifacts of the same rarity.

Next, select which Artifact from the next rarity level you want, and it is yours. Do this until you reach Gold-Tier Artifacts.