As you approach the old broken down stable that suddenly appeared in the woods overnight you hear a large *CRACK* as a tree branch falls from an old willow tree. Heart racing, you slowly pull open the stable gate. Its loud creak scares the rats who scurry out in fright. You peek your head in the stable before entering. Everything is pitch black except for a faint candle in the corner. Suddenly you see movement. An old man turns around and greets you. "Welcome" he says in a gritty voice. "Closer" he says as he rolls his fingers toward himself. You cautiously approach him and he says "My my, I see you've brought a pretty creature. Shame they do not live as long as humans." "Tell you what, I can grant your creature eternal life. All you have to do for me is a small favor." Looking over at your Cu sidhe that you've had since the early 2000's you realize the old man is right. Your poor pet dog has lost quite a bit of fur, most of their teeth, and is having trouble walking these days. So quickly you agree! "Yes! Anything! I'll do anything to save my pup!" "Excellent..." the old man says with a grin. "Fetch me these ingredients and I'll make a special brew for you!"
*hours later*
You return from your search with all ingredients in hand. You hand them to the old man and he smiles, showing off what little rotten teeth he has left. "Yes, yes, this is nice, one moment please." As you wait for the old man to concoct the potion you look around the stable with a torch you brang. Bones of everything from dragons to horses litter the ground. The stench of death is overwhelming and there are hundreds of flies. Before you know it the room fills with smoke and you cough uncontrollably as you race out of the stable. You collapse to your knees and rest your arm on an old tree stump. You turn your head towards the stable and you see the shadowy figure of the old man emerge from the smoke. "Here you go." he says as he hands you the crystal vial. Coughing, you reply "Thank you, I think, what do I owe you?" "Drink drink!" He says abruptly. Foggy from the haze, you press the vial up towards your lips. "No you idiot!" as he smacks the vial away from your mouth. "Your pet! Have your pet drink!" Ah yes you recall. This is to save your pet. You call your cu side over. "C'mer girl!" you say. She limps towards you with love and effection and licks your face. "Here girl." you say as you pour the liquid from the vial into her mouth. Suddenly before your very eyes her fur grows back, new teeth and fangs emerge from her gum line, her back straightens as she stands up straight, and she looks exactly like she did the day you tamed her. And then, she falls over dead. Her spirit releases from her body and takes up a ghostly form to the side of you. The old man cackles maniacally and says "This will be my payment..." as he drags your cu sidhes corpse towards the foggy stable. As you stand there in horror and shock, you don't know what to think. But as you look over to your side, there is your trusted companion, your cu sidhe, licking your face. You now have an eternal pet. A ghostly image of your friend. Until the day you die. You hop on your ghostly pal, amazed you can ride a ghost, and sprint off onto a new adventure.
Basically: Give us a quest to transform any tameable we want into a ghostly transparent pet until the end of time.