The Depth Diggers are legendary pants in Diablo III. They require character level 60 to drop. These are a very good choice for protection, due to their guaranteed resistances bonus. The unique affix damage boost stacks multiplicatively with other similar effects. For the purpose of the unique affix, Wizards' and Witch Doctors' Signature Spells do not count as Primary skills, as they generate no resources. However, if (and only if) coupled with The Shame of Delsere, they will affect Wizard Signature Spells, and therefore do drop for Wizards via Smart Loot.