This, in itself, is a great card for rogue. The problem is that rogue doesn't really have the health gain to make the best use out of it. Hard to evaluate, but I can imagine it being played as a one-of perhaps.
It's more or less aShadow Strike with 2 uses, but you pay say 7-8 health for it on average. Is that acceptable? For the most part I would probably say yes.