silly poison type fossil pokemon idea based off how cambrian weirdo hallucigenia was initially constructed upside down, with its squished guts mistaken for a head. hallusenic would be very sickly and weak until the scientists you brought the fossil to would call you and be like "oh my god, we're so sorry, can you bring it back to the lab, we messed up so bad". once you did they'd evolve it into hallucyanide for you.