Instead of a Dark Lord, you would have a queen, not dark but beautiful and terrible as the dawn! Tempestuous as the sea, and stronger than the foundations of the earth! All shall love me...

And you, Ring-bearer,’ she said, turning to Frodo. ‘I come to you last who are not last in my thoughts. For you I have prepared this.’ She held up a small crystal phial: it glittered...

But perhaps you could call her perilous because she’s so strong in herself. You , you could dash yourself to pieces on her, like a ship on a rock, or drown yourself, like a Hobbit...