
I've used the Fantasia a few times, but it was always as a gag. First time was someone slipped a fake Fantasia into Lili's drunk in the QS like 2+ years ago and she woke up the next morning stuck as a Keeper for three days. Woke up on the third day and was fine.
Another time was Lili and her late husband where he basically did the same thing. Was given a supposed 'cure all' which just turned him into a miqo'te until Lili made an antidote. Was for shiggles and then we went back to loving our hyurs again.
For me, it's all about the application. I tend to stop really acknowledging it after a while and just have my characters go 'okay cool'.
Another time was Lili and her late husband where he basically did the same thing. Was given a supposed 'cure all' which just turned him into a miqo'te until Lili made an antidote. Was for shiggles and then we went back to loving our hyurs again.
For me, it's all about the application. I tend to stop really acknowledging it after a while and just have my characters go 'okay cool'.