Now this is a poison type I'm looking forward to seeing in action Not sure how many open spaces I'll have in my actual party once we get it, though.
Also, just looked up the tounge-replacing parasite and... wow. Not sure that that's the direction it's going to take, though, as the Cymthoa exigua is supposedly harmless aside from replacing the tongue and this Pokemon seems to be taking a more grim route with it's evolution. Maybe it's going to be an evolution like Remoraid/Mantine? Have any unevolved water type in your party along with Xenova to make it or both of them evolve or something.
Also also, the discussion about Tomas' signature made me realize something I forgot to post earlier- I remember there was mention of Pslamb's natural predator that supposedly dressed itself like Pslamb (a play on "wolf in sheep's clothing")... would that black-and-gold chupacabra be it? Granted this is probably someone everyone else has already figured out by now haha, just felt like putting it here.