This build is more of a gimmick, but you can still do an aura Infiltrator. Considering the new sunder mechanic and the fact you might suffer from the damage reduction here and there, I can suggest to focus on passive sustain, it’s a passive build after all xD.
So, damage absorb from Turtle and Crab can help, also they can be bound to an aura skill. Hyrian is also a fine devotion for this type of build. If you are levelling aura char, I would prioritize getting Aura of Censure as soon as possible.