"But first," leered the Doppelgaenger in elf-form, "one more fuck, to make sure that you're going to be under for a while. And let's make it special..."
Brian watched as the Doppelgaenger's form writhed and twisted, then began bulging, as thick muscles grew beyond what the slender elven form usually encompassed. The creature grew taller as well, and his cock lengthened and thickened, resting atop a set of glorious, orange-sized balls. Looking up at the hulking figure, Brian realized with a shock that this new form was even larger (in every way) than the orc which deflowered him moments ago.
With a wicked grin, the Doppelgaenger reached out, and began to fondle Brian's dark breasts. As he ran his huge hands over them, they began to swell and grow, becoming melon-sized mammaries in a matter of moments. "Ah yessss..." hissed the freakishly muscled elf, "that's much better." He then took Brian's newly-enhanced breasts, and began to suck on them, moving from one to another and flicking the nipples in a way that drove Brian wild.
"Ooooohhh..." moaned Brian, unable to stifle the utterance of pleasure.
"You like that, don't you, you drow bitch," laughed the Doppelgaenger, as he finished his work on Brian's hooters, "let's see if you like this as much!"
Without further ado, the Doppelgaenger plunged his monstrous cock deep into Brian's pussy, elicting a shriek of pleasure and pain.
"Take it, bitch!" roared the Doppelgaenger, thrusting deeper and harder into Brian's inexperienced cunt, "Take it all!"
Using its huge body to its fullest, the Doppelgaenger kept increasing the power and speed of its thrusts, widening Brian while providing an unparallelled experience of both ecstacy and agony. With a roar, it emptied its powerful seed into Brian, and then began pumping the sexy drow some more. His mind ovewhelmed, Brian felt his resistance weakening. "Oh YES!!!" he cried, letting the Doppelgaenger's fucking overcome his sense. Although still restrained on the rack, Brian became an active and willing participant, bucking his hips, writhing in pleasure, and whispering words of encouragement to his new master.