Vipress walks over to Brendan who stood up clutching the potion in his hands by his chest "Mistress? Are you ok?" the vipress who was enjoying the way her limbs moved turned to Brendan "Better than ever, but I want to make some changes" she began to walk over to Brendan and snatched the potion from him "This will only sting a little" she said as she grabbed one of his hands and scratched his palm with a finger nail claw. The vipress carefully let the drops of blood fall into the potion giving it a crimson look to it then she did the same thing to herself making it a dark red colour. Then with a couple mouthfuls from the 2 litre vial she drank 1/2 of it.
Brendan who was wrapping his hand with a nearby piece of cloth stared at the vipress "am I going to die?" the vipress threw the empty bottle to the floor and looked at minion with a snakey smile "You have fulfilled my needs and kept your word, I will keep my end of the bargain" the vipress began to feel the effects of the potion working. The remains of her tail grew out until it was 30' long and a metre wide and she started growing in proportion to her large tail "Yes!" her voice was now snakey with some traces of human left. She grew hair from her head but it was like snakes, her claws lengthened and turning jet black, her scales over her body began to soften but turn a dark black until she was there a large sexy naga with HH breasts.
"Uhhh mistress?" Brendan moved a cautious step closer. The vipress eyes shot open and still looked very snake like "I feel renewed, warmth is all over my body". "WOW! you look incredible" Brendan said trying not to keep a direct look.