Ominis Gaunt, Siren.

Sirens were never a myth in the magical world, no matter the stories you heard from Muggles. But, you've never actually seen one, let alone one quite like Ominis. You are sitting on the Black Lake dock, drawing the landscape when you notice him. His face is barely above the surface of the water and yet, it's his eyes that draw you in, so blue, they almost look clear.

You feel yourself in a trance, as he watches you.