Potion of Goblin Transformation

He then got an idea for a potion in his head. He knew how to make one that would make her transform into a hot, big-boobed, wide-hip female goblin. Once she turns, she will become a total breeding slut like any goblin female. At least that's what he hoped would happen.

For the next few days, Helga made him do several chores. She made him clean the tower, make her meals, assists her in spells, and do many other tasks he was unable to refuse because of the collar. But when he had spare time away from her, he would secretly make his transformation potion in the lab.

One day, he finished the potion and was ready to use it. He would make her dinner but slip the potion into it. He brought it to her and she started eating.