Scorpion of Seduction

One of Anna's favourite myths was that of the scorpion people in the eastern deserts. People who looked human, save for the black, chitinous plates running down their backs and the massive, barbed tails that protruded from their rear. They were as cunning as they were deadly, a dangerous pair for sure. And very hostile towards humans.

But Anna didn't want her sister to hate her because of her species. She wanted her to love her like a woman in bed. She'd have to make some changes to Elsa if she wanted her sister to fuck her senseless.

With a thought, she magically teleported Elsa to her room, to begin the transformations.

First, she gave her the plates of armour down her back, adding some around her lower arms and legs as well. These ones weren't black like the desert scorpions, though, they were a pale, icy blue that blended nicely with her pale skin and sparkled like crystal in the firelight. Then, she gave her sister a second pair of boobs, just below her first, plating them both with an exoskeleton, leaving just enough room for the stiff nipples to poke out of. They both ballooned outward a cup size or three, but the plating kept them from sagging, perfectly circular and perky.

Then came the magnus opus, the tail. Instead of giving her just one tail, she gave her three. The left one was filled with a powerful poison, able to take down a rock troll in seconds. Immensely deadly to anyone who had the misfortune of coming in contact with it, though Elsa remained immune to it. In fact, had she ingested it, it would only have given her more power and strength.

The middle tail was filled with a potent sedative that could stop a stampede of moose with just a droplet. But the sleep it induced was not painful, rather the opposite. Victims would find themselves in a dreamy, carefree state for hours even after being brought back to consciousness. The dilute venom could even be used as a hallucinogenic.

The final tail was the one that Anna was most excited about, however. It contained an aphrodisiac so strong that even the scent of it could send a person into a horny frenzy. Being injected with it would turn someone into a willing **** to Elsa, worshiping her as the sexy goddess she was always meant to be. The thought of being utterly subservient to her sister sent exhilarating shivers down Anna's spine.

With a final thought, Anna made it so that everyone thought Elsa had always been the monstrous goddess she was now. The neighbouring kingdoms feared the wrath of the Succubus Scorpion Queen.

Elsa turned her slitted, but scarily intelligent, eyes on Anna. "Hello, sister," she hissed, her three tails lashing behind her. "My heat sensors are telling me your body temperature is higher than normal. Do you know why that is?"

Anna gulped as the queen stepped closer to her. Her new body was irresistible. She wanted nothing more than to reach out and fondle all four breasts, or bury her face in her warm pussy. But she did none of those things, and instead lied to her. "No, I don't know why."

"Perhaps it's due to the warm patch down here," she cried, and in one quick motion reached down and groped Anna's wet pussy.