Optimal Triumvirate Team for Arena?

That's difficult to ask without her even being out yet and even seeing how her lead interacts with them, as 2 of their uniques depend on critical hits, but her lead grants 40% crit avoidance(good for balance in my opinion) but also makes up with health recovery yada yada yada (every one can read)
I Do see a few ideas, traya, nihilus, sion, EP, Sit
Traya, nihilus, sion, vader, EP
Or even EP lead, nihilus, sion, traya, and Vader