You stifle a gasp. Not too far upstream is a herd of unicorns. Unicorns are one of the rarest magical creatures in the world. You have read all about them in your masters’ books. Hunted nearly to extinction by wizards after their horns, unicorns were thought wiped out on this continent. But here they were. An entire herd of mares led by a magnificent, shining stallion. You suddenly have a wicked idea.
“Would you like to have a little fun?” you whisper to Honey. The dryad nods enthusiastically without taking her eyes from the stallion.
Climbing out of the pool, you draw on the magic of the forest and cast a transformation spell on Honey and yourself. Immediately you feel your body begin to shift and change shape. Your bones lengthen and rearrange themselves. Soft silver-white hair spreads across your body as you fall to all fours, your chest barrelling outwards. Your face lengthens and your vision goes from forward facing to sidewards as your eyes move position. Your beautiful breasts shift and migrate, becoming little pink teats near your back legs. Your ass grows huge, and your pussy shifts further to the rear. Lastly, you feel your horn grow from your forehead.
A few moments later you are both beautiful unicorn mares, steam rising from your flanks as you stand on the stream bank. Taking the lead, you trot out towards the herd. A few heads turn towards you and you hear a some snorts, but it seems the unicorns aren’t afraid of sudden new arrivals. Poor things, no wonder they’re nearly extinct, you think. They’re completely stupid.
With the herd happily accepting you, you cast the second part of your spell. Immediately you feel a heat in your nethers and smell a strong, musky scent on the air. You hear a nicker come from Honey and mentally grin. Oh yes, daughter. You’re in heat and all you want is some big stallion cock, don’t you? I know you do, because I want exactly the same thing!
It doesn’t take long for the stallion to catch your scent. You know the exact moment he does when you see his massive cock flop from its sheath and his head whips about, searching for you. You don’t hesitate. Trotting over to him you turn around, lift your tail and present your gaping unicorn pussy to him.
The stallion wastes no time taking you up on your offer. You feel a sudden weight on your back followed by the glorious sensation of being filled once more. You shudder in bliss as the massive shaft parts your dripping lips and enters you. Your eyes roll back in your head, and your mind goes blank, overwhelmed by the sensation of being filled. The monster cock buried in your cunt is hot and throbbing. The stallion grunts and his balls slap against you, as he sheaths his entire cock inside you.
You let nature take over and feel your self slipping away. You’re not the dryad Queen anymore. You’re not the mage’s apprentice either. You’re nothing but a horny, slutty mare in heat, getting pounded by her stallion. Your grunts and whinnies echo in the night to the sound of meaty slaps as he humps you faster and faster. His tool, slick with your arousal, slides in and out. In and out. In and out. Over and over, until the stallion lets out a powerful whinny and you feel his thick shaft begin throbbing inside your leathery folds. At this, part of your mind manages to fight its way back to the fore, and you cast the third and final part of your spell.
Magic flows through your cunt and into the stallion’s cock, and you feel it swelling in size. You squeal as it stretches you to your limits. It’s so big now it feels like you’re more cock than mare every time it thumps home inside of you. You feel his entire body shudder when he orgasms, and his load fills you. Cum fills your womb until it starts to leak back out, but it doesn’t end. His balls, magically enhanced along with his cock, continues to pump load after load, each spurt filling you with more and more. Your abdomen is visibly bloated. You feel your own orgasm hit as your vagina clamps down on his spewing cock, throbbing and squeezing, milking every last drop of hot salty unicorn cum.
At last, with a wet slurp, the stallion slides out of you and you both stand panting, cum dribbling from your poorly treated pussy.
When you are able to think clearly again, you turn your head and admire your work. While the stallion had never lacked before, his equipment now was truly awe inspiring. Enlarged by your magic, his cock was as long as his torso, and as thick as one of his forelegs. His balls had swollen to the size of melons, hanging low in their thick black sack, swinging between his legs.
You hear an annoyed whinny and turn your head the other way to see Honey, pawing at the ground impatiently. You grin your big square teeth at her. Don't you worry, daughter. Your turn is coming.
Seemingly noticing Honey for the first time, the stallion quickly makes his way to her rear and shoves his nose between her legs, giving her a good lick. Honey whinnies loudly and you can tell she’s enjoying every moment of the equine cunnilingus. Pulling his face back, the stallion lines himself up and mounts Honey, his cock easily sliding into the eager slut.
As you watch you begin to feel a strange sensation in your stomach. Spell three didn’t just enlarge the stallion’s cock and balls, it also increased his stamina, libido and virility. Oh, and one more thing. It guaranteed that every load impregnated the mare he blew it in, with a rapidly increased gestation period. Time to bring the unicorn back from the brink of extinction.