Oh, no.. I know exactly what you meant, but applying that kind of logic means you could apply that to basically any characters circumstance.
The only person it really, truly fits is Sylvanas - she's already died twice.
I'm sure it will be Sylvanas as well - she's actually died, twice.
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Or, y'know, Sylvanas. Seeing as she's the character that's actually died twice.
The hour of her third death, i.e. hopefully the one we'll get to carry out, she may very well "usher our coming".