I've also been creating various D&D monsters with the AI. Here are some of my Sahuagin (for my Ghosts of Saltmarsh campaign). In order: standard Sahuagin, Sah. Baron, Sah. Champion, Sah. Wave Shaper, Sah. Deep Diver, Sah. Coral Smasher, Sah. Priestess, and Sah. High Pristess.
Here are some of the prompts that I could find. A few of the images were saved directly to my computer and not to Bing so I don't have their prompts off hand but it is usually a case of swapping out a word or phrase here & there to fine tune the image.
Sahuagin Prompt: D&D green scaly evil aquatic humanoid with small fins, webbed hands and feet, fangs, , high detail, digital painting
Sahuagin Priestess: evil D&D green scaly aquatic female humanoid with small fins, chubby, webbed hands and feet, fangs, priestess, wearing golden jewelry, high detail, digital painting
Sahuagin High Priestess: D&D green scaly evil aquatic female humanoid with small fins, webbed hands and feet, fangs, holding a wooden staff studded with jagged shark teeth, wearing golden jewelry, high detail, digital painting
Sahuagin Coral Smasher: green scaly evil aquatic humanoid with small fins, webbed hands and feet, fangs, athletic, holding a warhammer, high detail, digital painting
Sahuagin Water Shaper: D&D green scaly evil aquatic humanoid with small fins, webbed hands and feet, fangs, armed with a large sword with ocean markings, spell energy swirling around an extended hand, aggressive, athletic, submerged in ocean waters, dynamic action, wide shot, high detail, digital painting
Cheers,
Tim