[Let's... ignore the part where Zelena stabbed Hook in the heart. Because that's relatively tame compared to the part where Hook might be a fucking Dark One.]

Well she had no problem turning that damn dwarf into a garden ornament.

[Sneezy is better off that way tbh.]

But you, the newly immortal sound of one hand clapping and I all remember the same thing -- Emma threatening us. Immortality comes with a terrible price, one I'm not sure even the Dark One would pay for anybody else, and she's still, quite clearly, the Dark One.