Bowser sneered at the bubbling concoctions. He could easily down the remaining potion, or try his hand at alchemy himself, but the Koopa king knew better than to risk it. He was a ruler, a fighter, he did not have the scientific knowledge to try his hand at changing the spell to make it last.
But he knew someone who could. Cradling the large flask in both of his huge claw tipped hands, Bowser made his way out of the lab and through the castle, Goombas and Koopa Troopas scattering before him for their own safety. Eventually Bowser made it to the tower where the Koopa Court's sorcerer, Kamek, resided.
"He'll fix the potion. Or else" Bowser growled as he pushed open the heavy wooden door and made his way up the long, spiral set of steps, eventually stepping up into the magical reptile's study, which was adorned with all manner of strange items and novelties. Kamek himself was asleep on a hammock that was held aloft by two of his numerous floating broomsticks, his large blue cap pulled down over his eyes and beak as he snored loudly.
"AHEM!" Bowser said loudly, and tried not to chuckle too heartily as the much smaller Koopa jerked upright in surprise, unbalancing the floating hammock and tumbling to the floor.
"Who dares!?" KAmek snarled as he extricated himself from the floor, but his angry demeanour changed the instant he saw Bowser looming over him. "Oh! Oh, my lord Bowser! What a pleasant surprise! I was...um, just testing out a new type of broomstick when I must have, uh, accidentally cast a sleep spell on myself!" Kamek dusted off his blue robe and straightened his cap before shuffling over to a massively overcrowded desk and grabbing his magical wand. "What can I do for you today, my lord?"
Bowser rolled his eyes as he carefully set the glowing green potion on the tower floor. Kamek immediately waddled over and peered into it's contents, the flask reflecting off the Magikoopa's goggles.
"This potion will allow me to transform into a disguise that I will use to infiltrate the Mushroom Kingdom and finally defeat it and that cursed plumber once and for all!" Bowser boomed, his voice shaking the small chamber of novelties and magical items.
"So why have you not consumed it and gone about your plan?" Kamek asked, giving the flask a gentle shake and analyzing the sparks of magic that frothed within.
"Because it only lasts for a few moments before I change back into my glorious self!" Bowser flexed an enormous arm for Kamek, who seemed unimpressed. Bowser frowned and ceased flexing, crossing his arms together and staring at the magikoopa, "So I command you to make the potion last longer. Forever, if need be!"
"Forever, my lord? Surely you jest" Kamek scoffed, frowning up at Bowser, "But when would you change back?"
"There's plenty of other potions, plus the new lab-Koopas can make more of this, if need be. You can help them" Bowser growled, losing his patience.
"Well, I suppose I could most likely create the effect you desire...But I'd have to brew up a entire new potion from scratch. Those lab-Koopas you brought on, they're unskilled in the magic arts, I'm surprised it worked at all! I will need a week, at best, to make what you need"
"NO!" Bowser roared as he reached forward and grabbed Kamek by the scruff of his robe, "NO MORE WAITING. FIX IT OW!"
"Yes! At once my lord!" The much smaller Koopa screamed, trying his best to sink into his robe and shell, "Just don't stomp me!"
Bowser dropped his sorcerer to the floor and grinned, "That's more like it. So, how do you plan on fixing it?"
Kamek coughed and dusted himself off once more as he regained his composure, tapping his goggles with his wand as he struggled to come up with an idea to please his master. Re-creating the potion was the safest bet, but that would take time, and Bowser lacked the patience.
"Hmmm..." Kamek said, pacing around his study. Tanooki suit leaves hung dryly on the wall, a frog suit folded up in the corner, different Koopa sheels in various stages of dissection, a go-kart engine floating on a small cloud of magical geometric shapes. He stopped to admire a Super Mushroom, one that he was planning on trying to fuse with a super star to combine the ffects of both.
Combine the effects of both...
"AHA!" Kamek yelped, grabbing the mushroom and racing back over to the potion flask, "My lord, what does the potion turn you into?"
Bowser felt his cheeks grow red as he remembered the feeling of massive breasts swinging from his chest. He couldn't tell Kamek what it did. "It, um, changes me into a human!" The Koopa King muttered, but that was all Kamek needed to hear.
"Ah! Well, if we combine the semi-permanent effects of a super mushroom..." Kamek took the large mushroom, whose eyes almost appeared to be eyeing the potion nervously, "And combine them with the potion..." Kamek ripped the super mushroom's stem off and tossed it into the potion, cackling with glee as the stem melted away instantly, turning the potion yellow before shuffling off towards a collection of random items with the mushroom cap. After a moment of sifting through the collection of what Bowser took to be junk, Kamek pulled out a small golden crown, with eyes of it's own staring blank ahead.
"And if we combine this with the crown" Kamek shoved the mushroom cap into the crown's interior and waved his wand at it, a low WOOP WOOP WOOP resonating through the chamber as he fused the two items together. "Ahh, perfect! Now all we have to do is..." Kamek raced back to Bowser and the flask, trying comically to lift the glass container despite the fact it was almost as large as the mage himself. After a moment of furious grunting, Kamek staggered back and pointed at the flask with a dull claw.
"Uh, if you would help, my lord?" The magikoopa asked, giving Bowser a sheepish looked. Bowser merely rolled his eyes and picked the flask up, staring at Kamek.
"Ah, good good!" Kamek squealed, setting the fused crown on the floor of the chamber, "Now my lord, please pour the potion onto the crown!"
"And this will make it do what I want?" Bowser grumbled, tipping the flask over so that the potion began pouring out. The two Koopas stepped back to avoid any splashes, but the crown seemed to absorb the yellow liquid.
"Yes! You see my lord, potions are edible, they fade through the body as your body processes it. But as we all know, costume items only fade when they are removed via blunt force. So by combining the super mushroom with the crown, we made it a costume, and by letting the mushroom absorb the potion, the effects of the potion will now last forever! Or until something hits you hard enough. But yes, FOREVER!"
The remnants of the potion trickled from the empty flask an onto the crown, which began to glow for a moment before turning inanimate once more.
"And there you have it, my lord Bowser, your disguise is ready! A rather ingenious solution, if I do say so mysel-" Kamek boasted, but was interrupted as Bowser let loose a roar of triumph and swiped the crown from the floor, knocking the magikoopa backwards.
"FINALLY! MY MASTER PLAN IS FUFILLED!" Bowser roared, and placed the crown on top of his head.
*POOF*
And there, in a matter of painless seconds, stood the incredibly buxom beauty that Bowser had been before, massive breasts swaying gently, magnificent rear and tail sticking out from beneath an elegant form fitting shell, red tipped golden locks flowing almost to the floor, and slim fingers sliding up and down their new body with ease. The only difference was that now, Bowser was fully clothed, a long black dress, a dark reflection of Princess Peach's, flowed outwards as heavy blue gems accented the outfit, Bowser's signature spiked leather bindings and chokers fitting securely around his slender neck and wrists.
"My...My lord!?" Kamek said, before fainting from surprise.
Bowser...or rather, Bowsette grinned, a single fanged tooth sliding over supple lips as he...she felt the power of her new form course through her, this time for good.