Almost immediately you were flipped onto your stomach, and ash gray scales began growing up your body, as your hands and feet turned into giant 3 toed claws. As this happened you grew a tail, and your stomach grew thicker black scales. Your neck then grew longer, and overstretched past the length of your head and almost was 4 feet alone. The scales from your stomach spread up your neck, and the gray scales followed shortly after. Your head then reshaped becoming draconic, and you grew horns as your pupils became slits. You felt your tongue change to become forked, and your teeth all sharpened making you a carnivore.
"The change was far from over," you realized as you looked down to see your dick shrink away into your body forming a slit, or vagina. You looked at your new sex in horror, but then began roaring in excruciating pain came from both your shoulders. You then witness two heads growing out of your shoulders, but their neck lenghth, and overall size was slightly smaller than yours. Finally your body grew larger, almost to the size of a horse, or cow, but slightly smaller and more feminine to your body.
You looked at your body frantically, and worried, but then your left head spoke up,"Hello mistress, why are you so stressed, and scared?" The head was staring at you. Then your other head spoke,"Yeah, why exactly are you so surprised about being you? I mean you are the superior being here out of the three of us." You the looked to your heads separately,"You two...you don't even know what just happened I was a human male, and now I...we're this it's just...I can't comprehend exactly what happened." You said
"Ahem, ladies may I have your attention." The warlock said and all three of you turned to him,"I made you into my familiar, and I am now your master, as your creator. My name is Durano, and you shall adress me as master, or Master Durano."
"Hey shut it person!" Your left head said
"Our only master is our mistress, now fuck off!" Your other head said
"Both of you shut up before I tear you both off myself!" You roared then paused,"Where did that come from?" You thought to yourself.
"Apologies for the other two, they don't know the situation like I do. Anyways please explain why anything you just said is true before I have to kill myself out of...myselves." You said trying to calm down.
"Anyways you are my familiar, if I die to natural causes you gain immortality, but if I am killed off then you die with me. As a familiar your duty is to serve me no matter what, and obey me until my natural death. I picked your form as a hydra for I am interested in the beings themselves so I can research you as a subject, or subjects. The reasoning for your gender is because I already have studied males of your species, but never females for they are a rare find as are most hydras as a species." Durano said
"I see, but I'm still a bit bitter about my gender, and considering you're going to be researching my gender as a hydra that makes me annoyed. However, like you said if I want to live then so do you, so I have to accept my fate...master." You said
"What?" The two heads said shocked
"Hey who's the superior head here? Besides it's true I was summoned here by him, and if what he says is true then we don't have much of a choice. I don't even know what name I should go by." You said
"I debated this before, and I believe a name such as Obsidian is fit for a main head such as yourself." Durano said.
"I guess that fits, but what about these two attached to me?" You said
"We already know who we are, and each other, I'm Dusk." Your left head said
"And I'm Void, and technically all three of us are sisters." Your right head said
"Sisters huh, well I guess I always wanted a younger sibling, the more the merrier I guess. Sorry for roaring at you earlier, just don't do stuff like that unless I am as well." You said
"None taken, and spoken like a true alpha head like yourself." Void said
"But think twice before actually ripping us off, we will die for you but we grow back with more heads. Which means as long as you stay alive we can have as many sisters as our body can handle." Dusk said
"However don't actually, we still feel pain so being ripped off hurts a lot. Also we can't control the body at all, so it's more like your body. The most we can control is our necks and heads." Void said
"Noted, but let's see what our master wants, and everything he said earlier applies to you as much as me." You said then lowered your head to Durano,"Sorry about that master, just had to explain everything to my sisters first." You said
"Oh it's fine converse all you want, I actually encourage it it's quite interesting for my research too. Anyways follow me, my home is close by so it shouldn't take us long." Durano said and you nodded and responded,"Lead on master, and we will follow."
"Indeed, also please know we will be researching your body thoroughly, and this includes body functions, and potentially motherhood." Durano said
"Oh, um, okay master," you said blushing, and following your master