I go toxin ward for reload and holster weapon damage and decaying dragon key(less shields)
Other auras of choice are [Corrosive Projection] or [Dead Eye].
Having Fleeting on makes casting costs a lot more friendly, [Rage] + [Amalgam Serration] are on so you dont need to worry so much about getting your buff up for the first limb and the speed from Sprint Boost + Amalgam Serration help immensely on quick charge to keep up with the likes of a Volt DPS.
Helminth Update- Subsumed Smite onto the build for the big radiation damage.
Other DPS Options
Other chroma builds