I do not own TMNT only my oc on with the story
Shredder stormed into his throne room angry as hell he had just lost Karai to becoming a mutant snake girl and he blamed Hamotoe Yoshi for all of it. He sat down on his throne frustrated letting out a deep sigh he closed his eyes until he heard Xever talk. "Master if I may I may have a solution to Splinter and to find Karai" Shredder looked up in almost shock what did he know he was only a mutant himself but Shredder was prepare to listen. "You see back in my home village there was millions of snakes but the thing I noticed was that if one was taken far away from the one who might of known it better then it found it if we use the same DNA of snake and mutate another snake of the same breed then it will find Karai. And snakes love to eat rats master" Shredder thought for a few minutes until finally standing up and without a word he left the room everyone there followed and they finally saw him enter Stockman's lab Stockman buzzed over to a cage and was holding a white rat over it. "Stockman!" Shredder almost yelled making Stockman jump still holding the rat Stockman faced Shredder. "Was there any snakes left or mutagen?" Stockman nodded his head and buzzing over to the cage he put his human hand inside pulling out a large brown anaconda it slithered around his arm wrapping around his arm toward the rat until it snapped at it catching it in its mouth and swallowed it whole.
Stockman placed her on the table and pressed a button on the wall opening up a large room with a tank full of mutagen. He turned to Shredder and asked. "Might I ask why we need this?" Shredder did not answer he simply roughly grabbed the anaconda and threw it into the mutagen slightly whispering. "Go find Karai beast" the anaconda splashed in but did not resurface until a large head splashed out and with it a large snake body the anaconda slithered out until it fully amurged everyone took two steps back Xever whispering. "For all that is holy please tell me I don't see this"