Bopkin got back with his potions of strength that you had messed with to turn people into sexy nymphs. The potions were in fact intended to be sold to the human guards, and as per tradition he'd test and see if there'd be any harmful side effects on you. There hadn't really been much so far except for the times you complained about an upset stomach, or slept shorter or longer or whatever... But with your meddling with his concoction and your magic reserves...
The transformation wasn't exactly painful, but it was rousing enough for you to wake up and see Bopkin funneling a potion down your throat. You knocked him off and then gasped as you asked "The fuck are you doing?!?!" then your version blurred a bit as your form feminized a bit. You appeared to be a female version of yourself, but you could feel that you were something completely different. A bond with the small bits of nature that existed in your apartment. Most Nymphs only had enough power to connect to the nature in their immediately vicinity. Most could only affect nature within a mile or so of where they existed and were bonded... None of them had the magic reserves on par with an Archmage however, and you could feel all the nature. The seeds in the ground waiting to be nourshed and grow, the bits of mold that wanted to spread, the mini-gardens wanting more clean air... The very essence of the world itself reaching out... and here you were... A captive bound in a place of concrete and metal. Nature screaming to be let in, but kept out... And here you were one completely in tuned with nature, one who had an instinctual mastery of nature magic, and one who had enough magic to theoretically overpower small armies.
The next hour or so was a blur, mostly instinct if anything, but you were now on grass and dirt surrounded by small flowers and numerous sturdy trees, a number of them bonded with what were once intact buildings as support... There were also numerous cries of pain, death, and fear. You could feel so much in your sphere of influence as the place you had bonded to was this new massive forest you had just created. Near you was the chronivac, and while it was a thing of man and artificial you had a purpose for it. For while the forest was thriving it wasn't quite "Alive" It would take some time for some nymphs to naturally be created, but there was no reason for so much death to occur when you could save those lives and make them better. Traveling around the forest was quick as you could meld with the plants, and roots, and move all throughout your massive forest. You could just feel and detect those around you, and choose to change the people into Nymphs who would bond with what they could... others may be left alone like some of the elves who were more naturally attuned with the forest. Others who were too magically weak may be turned into beasts... You chuckling at your past human self also made a number of Orcish amazonians.
It was noticed by many that a new micronation of sorts had just appeared. It was unnamed, but it was filled with nature magic and ran by the first Nymph who had magic power on the level of an Archmage and who may be able to tap into the spirit of the world itself.