Hooo boy, where do I even begin with this one. I actually gave up on this one a while ago but picked it back up again because someone requested it. Basically the AI have difficulty with semi-transparent black matter so stuff like black smoke, liquid, magic, etc are a pain in the ass to train. So I deleted most data that has those kinds of effects except the more solid and opaque looking ones because training them all together will diminish the effect. I also kinda bypass the problem by tagging them as 'ink' rather than 'black liquid', because the AI seems to respond better to the former. Tbh, I'm still not fully satisfied with the result, but this is already my 9th attempt doing this, so Imma call it quits with this one and move on to other things. Also, this seems to work better on non-realistic models..
Weight: 0.6 - 0.8
Trigger: shad0wmancer
Additional tags: ink, (swirling black ink) (use more brackets to enhance the effect)
Note: Often times, puddle of black liquid appears underneath your characters which I'm assuming suppose to be your character's shadow. But sometimes it will generate an image of your characters partially submerged in it, especially if it's not a full body shot. Tbh, I don't know why it does that, none of my training images have that kind of imagery. Try putting 'submerged' in the negative prompt, hopefully it'll happen less often.
p/s: If you're leaving a review, consider sharing your generated images too. I love looking at your creations..