Perhaps Alec's friends and family would launch a rescue mission. They could be very determined to get him back, and in the process, there could be a big showdown between Magnus' fans who support the kidnapping and those who oppose it. It could also lead to a deeper exploration of Magnus' character, like whether he has some dark side that allows this to happen or if it was just a momentary lapse of judgment.
He may also try to reason with Magnus or the kidnappers. Alec is a smart guy, so he might try to find a way to get out of the situation through dialogue. He could point out the negative impacts of their actions on everyone involved.
One common way could be through using his magic in a subtle way. For example, he might use magic to create situations where Alec has no choice but to follow his lead. Maybe he makes it seem like the only option for Alec to protect his friends or family is to do what Magnus wants.
Another scenario could be that the kidnappers have some sort of ulterior motive related to Sora's special powers. They might try to extract that power from him, but Sora, being the strong - willed character he is, would fight back in some way, even while being held captive.
Perhaps she'll use her own abilities to escape. Sarada is a strong and intelligent ninja. She could outwit the kidnappers, find a weakness in their security, and make a run for it. For example, she could use her Sharingan to deceive them or find a hidden passage if she's locked in a room.
Well, Sonic might be held in a high - tech prison. His friends like Tails would start a rescue mission. They could use their unique skills, Tails with his flying and mechanical abilities, to track Sonic down.
It could be that the kidnappers have a personal vendetta against Asta. They might be from a family or group that was shamed by Asta's actions in the past. In this situation, they might not be interested in his anti - magic directly. Instead, they just want to get revenge on him. Asta, being the positive person he is, would probably try to talk some sense into them. But if that doesn't work, he'll have to rely on his physical strength and whatever anti - magic powers he can muster up to defend himself until help arrives.
Well, one possibility is that her friends would immediately start a search party. They might split up to cover more ground, with some going to the forests where they often find Pokemon and others checking out the local towns. Her Pokemon would also be in a frenzy, trying to use their unique abilities to track her down.
Naruto getting kidnapped by Orochimaru would be a really dangerous situation. Orochimaru could start by putting Naruto in some sort of chakra - suppressing device. This would limit Naruto's ability to use his Nine - Tails power. Then, he might try to implant some of his cursed seals on Naruto, which would give him more control over Naruto. But Naruto has his own allies within himself. The Nine - Tails, despite their rocky relationship, might help Naruto out in this situation. Also, Naruto has the memories of all the people who care about him. He'd draw strength from those memories and keep his hope alive, waiting for the moment when he can break free and return to his friends and the village.
Well, perhaps the kidnappers are Death Eaters who have a different plan for Draco. They could be trying to use him as a bargaining chip against his father, Lucius Malfoy. This would put Draco in a really tough situation, caught between his loyalty to his family and his own desire to break free from the dark side that his family is associated with.
In the 'alec meets magnus uncle fanfiction', it could be that Magnus' uncle has some interesting stories about Magnus' past that he shares with Alec. This could help Alec understand Magnus better. For example, he could learn about Magnus' early days as a warlock and the challenges he faced. It might also be a situation where Alec's Shadowhunter background causes some initial tension, but then they find common ground through their love for Magnus.