Momo's power!

Izuku was thinking frantically, before turning his gaze towards Momo. Things were about to escalate out of control, and he needed to do something. Her powers could definitely solve this problem in any number of ways, even if they had to include sexual things... Perhaps turning all the villains into bimbos that were too horny to be threats? He shelved that as a potential last resort... It seemed a little far, a violation of free will he wasn't willing to jump right to, even when they were threatening people's lives... But keeping them from causing serious harm to his friends and teachers had to be the priority. He also still had secrecy of Momo's powers to consider.

Going with the first somewhat less **** idea that came to his frantic mind, he whispered frantically to Momo, "Momo, I wish that any time one of these Villains was about to do anything permanent to one of us, or launch an attack that would do so, they will be crippled by the sensation of being castrated. Not actually castrated, just feeling like they were out of nowhere. It seems we'll all have to fight, so don't let any of us come to harm, got it?" This seemed like the best option in his mind for the moment. It would keep Momo's powers from doing anything too overt, and serve as a safety net for everyone. And it should count as sexual, given it was a mental attack on the villain's reproductive organs. If given more time, or a calmer mind, he might have come up with a better solution overall, but he was panicked and rushed.

Aizawa and Vlad King meanwhile proceeded to attack the throng of villains, who proved completely unable to overwhelm them with numbers. Aizawa used his Quirk quite intelligently. Instead of focusing it for extended periods on a single target, he would activate it briefly at random on a random target. This made the villains uncertain of if and when they would be able to use their Quirks, prompting moments of hesitation... Which Aizawa and Vlad King exploited without mercy.

Momo bit her lip and nodded, snapping her fingers. She was about to quietly suggest something else, when Kurogiri appeared amidst them. 13 was about to use her Quirk on him, forgoing her usual restrictions against using it offensively due to how lethal it was in light of the danger the students were in, but Monoma, Bakugo, Tetsutetsu and Kirishima got in her way by charging Kurogiri... And their attacks proceeded to phase through him. Like he was actually made of that mist. He then proceeded to warp them elsewhere.

Izuku made to attack Kurogiri himself, aiming for the neck brace, reasoning that he was wearing it for a reason, but he was dodged as the Villain began to spawn more portals and send more and more students to random locations, though intentionally leaving Izuku, taking Shigaraki's desire to kill him personally for that stunt he tried to heart.

Before he could send Izuku straight to Shigaraki however, Izuku felt himself get grabbed around the waist, and he was pulled through a portal by another student, he couldn't see who, who was already going through. "...tch," Kurogiri clicked in annoyance, turning to face 13 and the students who had managed to avoid his wave of portals.