[Shadow] Best way to use Shard of Nothing?

[Lyon]

What's the best way to use Shard of Nothing as Shadow? Stack with lust or use before/after lust? Also is there a best spot in your rotation to use it? (I was thinking it would be best to use right after your dotweave ends to get to your next dotweave faster, but I'm uncertain)

[ceall]

I personally bound it to MB, so i use it whenever it comes off cooldown. That's how it gets used at most during an encounter.

[Alextros]

Dotweaving want to have low haste when you weave it, so yes, I do suppose using Shard of Nothing after your Devouring Plagues to build your Shadow Orbs faster is a better usage.