Weakaura for tracking multistrike Sinister Calling procs

[Dustbowl]

I'm trying to make a weakaura to help me notice unusually lucky strings of backstab/ambush multistrikes for Sinister Calling's bonus rupture/hemo ticks, but despite all of my experience with Weakauras I can't seem to get this particularly thing to work. Could anyone offer any help?

[Deleted]

Should be able to track with spell IDs.

Dot: http://www.wowhead.com/spell=1943/rupture
Sinister Calling: http://www.wowhead.com/spell=168963/rupture

Same is there for Hemo
Dot/InitialHit: http://www.wowhead.com/spell=16511/hemorrhage
Sinister Calling: http://www.wowhead.com/spell=168908/hemorrhage

This is atleast what Warcraft Logs shows.