Funny, I'd been thinking about a chaos build

Here's the thought process about as far as it went, at least on my side. I started by picking every chaos and DoT node, along with the witch AoE, starting from witch.

Honestly, at the beginning I wanted to do Aegis + Lightbane. Since that's all passive and flat damage anyway, I figured I'd supplement it with damage skill(s). And oh look there's desecrate. And obviously I'd use Vulnerability and shockstacking. Shockstacking, clearly, would be done by Tempest Shield, because Aegis. And all that.

Then, y'know, I actually went to look up Desecrate. Bugger. That's...not a whole lot of damage. Clearly, the obvious next move is to hop in and use either poison arrow or viper strike. Or both, only auras would cleared by the weapon swap, which is a problem. AoE radius would help both of them, but PA more so than VS. For reference-

Level 20 DPS:
PA: 383.1
VS: 289.5
Desecrate: 261.7

Level 25 DPS:
PA: 700
VS: 500
Desecrate: 465.3

These are base numbers. That is to say, VS takes a further penalty from splash. Further, the skill link would simply be VS splash empower, with a maximum of 3 links available in the 1h weapon. In contrast, PA can take gems such as conc.e, AoE, etc in addition to empower. And there are pretty well no generic damage nodes - physical weapon yes, generic weapon hardly. Projectile, on the other hand...yup, we're going PA for sure. Lightbane wasn't worth much damage anyway.

Shockstacking? Well, I can self cast arc/shocknova. Or I can try to make totems do it. It's been done before and often.

when suddenly

What do you know, no new ideas under the sun. This looks pretty cool and I wonder if I can't get some shockstacking thrown in. Probably by way of the zombies. Looks Invasion safe too, much better than viper strike, for bonus points.