I drew a troll yesterday with prosthetic horns. Would the prosthetics have any effect on their psychic abilities? They're a prince of void, however, so could they destroy their inability to use psychic powers (if the horns affect that)?

I don’t quite think Horns have anything to do with psychic powers personally. I mean- Do Horns have any purpose other than aesthetic purposes or vestigial from their species? I know a big headcanon is that they’re Calcified Antenna, and another that they’re sensitive, but other than that they seem to serve no major purpose.