Pony Diffusion has no clue what a Classical Unicorn is. It can generate horned horses, horned deer, horned ponies, but the name Amalthea doesn't ring a bell.

Coaxing it into generating this took way too long. The prompt is very fragile, touch a thing and you get donkey ears, deer tail, horse belly, all over the place, so reusing it will be tricky.

/dream prompt:score_5_up, solo ((pure white)) female deer (feral), (deer head:0.5), (unicorn head:0.5), one (straight horn:1.3), tall, (slim), white fur, white body, thin, lean, (thin long:0.7) legs, dainty cloven hooves, standing, (long:0.4) (donkey tail:1.1), smooth flowing white mane, facing away, ethereal background dark night, starry sky, big, near lush tree, (anime:1.3) negative_prompt:brown, markings, (donkey head:0.6), (horse:0.2), spots, (long ears:0.4), tinted, (short tail:0.9), antlers, pink, (human) width:1024 height:1024 scale:7.5 steps:25 sampler: K_EULER_A model:PONY_V6_XL seed:4191651827 safety_filter:false