I’ve used a sort of Naga in The Princess Planet, but I gave her arms and a torso from a human, not just a head. In D&D Nagas are supposed to not be that strong but are clever and use their magic to best their opponents. I figure some of her jewelry must be enchanted and that potion’s gotta give her some cool powers, like icy breath or something. And not just like “winter fresh” mouthwash icy breath. I recently watched comedian Dara O’Briain joke that the different minty flavours of mouth wash are all kind of useless because they’re so similar, and even more similar if you rinse after you’ve brushed your teeth.