I need a good pvp build

Im thinking interrupt, but i dont know. Im so out of the loop (pvp wise), that i dont know whats good anymore. Any suggestions?

Not tried, but this build should be great vs casters:

Frustration, Conjure Phantom, Distortion, Power return, Web of Disruption, Drain Delusions, Res signet.

Free elite slot to play around with at your lesiure. Probably another energy management would be best or mantra of recovery.