So many builds pump high STR and low EFF, assuming you have or are going to recruit a group beforehand. This assumes the opposite, you're going in on public and blind.

This build works for me thanks to Arcane Energize. It is designed to keep me active without having/needing a [Trinity], but is still viable with a Trin in the group.

I went [Energy Conversion] over [Transient Fortitude] to keep the Duration higher for both Dispensary (3 procs per cast) and Discharge, though it does require a bit more management to ensure you have the buff before casting either ability. Dispensary management is the name of the game, make sure it's the first thing you cast when you zone in and keep it as close to 100% uptime as you can. With the worst luck (no orbs double procs and no Energize proc) that's 75 energy, which puts you in the hole, but anecdotally for me that's a very rare occurrence.

Due to the way Discharge works, you can get away with trading out Augur Reach for more survivability if you need ... I'd recommend Capacitance for the group shield/overshield.