I see conflicting information about this all over the place, and I can't get a straight answer with reasons WHY one way is better than another. Most guides I've read (Icy Veins, Ravenholdt, etc) say to just macro SR into SD and pay no attention to it - just abuse Spambush like normal. Then I've read some posters here, and even the Icy Veins guide contradicting itself, saying that you should cast SR - Rupture - SD - Spambush.
Does the SR benefit from SV? Or why is that Rupture before SD important at all? Does it have to do with timing of the SR's damage?