I warn it can be used for nsfw, and even for things totally ilegal if they were real girls.
It can create true wonders, but it has got also its own limits. They are perfect to create portraits of your PCs but if you want a epic scene where the characters have got dinamic poses, that is more complicated.
The art by AI is not going to be the end of the works by profesional artists, because these can design sketchs with lots of character, from different angles.
Or if you want to create a character totally new, for example a female autognome, the AI hasn't learnt yet to create portraits of autognomes. You can't use AI to create a picture with the characters of Dragonlance but if the software had got files with them. Or AI can't create an image of a bugbear because this is unknown by the software.
To create pictures with D&D creatures and species, the software would need special files.