Lavos-lite that likes to stand in one place. Cast Thermal Sunder, pull everything into its radius with Larva, reactivate for Larva Burst, and watch as everything gets eviscerated by status procs. Your teammates get absurd HP/s healing from Ravenous and a hefty damage boost from Thermal Transfer, assuming they also like to stand in one place.
For best results pair with Condition Overload/[Galvanized Aptitude] to benefit from the extra 4 elements each enemy will end up procced with (Toxin, Corrosive, Heat, and Cold).