- Is the challenging appearance specific to the character it was achieved on?
- Are artifact tints account/class-wide or character-restricted?
Artifact appearances, including completed Mage Tower challenge appearances, are account wide. You can transmogrify a non-artifact weapon with an artifact appearance unlocked by a different character on the account. The character must be the appropriate class and specialization for the Artifact, and all of the other standard transmogrification restrictions must be met.