Another perfectly reasonable AST idea

[Nathair]

I would suggest you a bit more use of Energy Drain.

You do realize that aetherflow stacks aren't THAT precious, right? You even have two ways to gaining them now. Shadow Flare does take priority, of course, but prevention is better than curing at all times.

So, I'm sorry, but from your PoV do I need to use ED or Soil?
Do I need to keep up Shadowflare and don't let if fall, with the other DoTs, or use Soil?
If, as you stated, the answer to these questions is "not Soil", then you yourself said Soil is actually situational and pretty useless otherwise.
T11, T13, A1S Jumps (when we were undergeared), maybe A3S, Thordan's LB, but that's as far as it goes.
Unless, of course, you're fine with losing 900~ish MP*3, the strongest ST heal we have, or the strongest AoE we have.
Your pick.