In some fanfictions, Merlin's mother could sense that he's in danger and come to Camelot to help. She might have some special knowledge about the poison or a way to counteract it. Also, the magical creatures in the forest that Merlin has befriended could play a role. They could either guide his friends to the cure or try to heal him themselves with their own magic.
Well, one possibility is that Merlin's friends, like Arthur, might search desperately for a cure. They could go on a dangerous quest to find a rare herb or consult a powerful sorcerer who might know how to save him. Another could be that Merlin, while poisoned, has strange visions or dreams that give him clues about his true destiny or the future of Camelot.
In this 'naruto gets poisoned fanfiction', Naruto could also try to fight the poison using his own chakra. He might enter a state of inner struggle where he has to battle the effects of the poison on his body while still trying to protect the village. His Nine - Tails chakra could play a role, either helping him resist the poison or making the situation more complicated if it reacts badly with the poison.
One possible plot development could be that with Merlin's help, Harry discovers a new form of magic that was previously unknown. This new magic could then be used to defeat a powerful enemy.
Perhaps Sakura's injury makes her realize she has some hidden strength within her. She could start to have visions or gain new abilities while she's recovering from the stabbing. This could then lead to a whole new arc in the fanfiction where she has to learn to control these new powers.
Well, one possible plot development could be that the kidnappers demand a ransom from Batman. Batman then has to race against time to find Robin without alerting the media or causing panic in Gotham. Another development might be that Robin manages to leave some hidden clues for Batman to find while being held captive. Maybe he uses his martial arts skills to briefly overpower one of the kidnappers and mark a symbol on the wall that only Batman would understand.
Well, one possible plot development could be that after Christy gets shot, her friends or family rush to her side and try to find the person who did it. Maybe they start to investigate and discover some secrets in the process.
One possible plot development could be that Beckett's friends and colleagues are in a race against time to find the shooter. They might follow various leads, interrogate suspects, and gradually piece together the mystery behind the shooting.
Well, in this 'chuck gets shot fanfiction', it could be that Chuck's injury leads to him discovering new powers or abilities within himself as he heals. Maybe he has some sort of near - death experience that changes his perspective on life. And it's also possible that his relationship with his love interest deepens as she stays by his side throughout his recovery.
One possible plot development could be that his friends immediately launch a rescue mission. They might use their unique skills and resources to track down the kidnappers. For example, if Obi - Wan is involved, he could use his Jedi mind tricks to interrogate possible informants in the underworld.
It could be Morgana. She has been known to be an antagonist and has a vendetta against Camelot and those associated with it. Poisoning Merlin would be a way to weaken Arthur's most powerful ally.
One possible plot development could be that his friends rally around him. For example, Sakura might use her medical skills to try and figure out what's wrong. Another could be that Naruto's illness is somehow related to a new enemy or an old foe's hidden jutsu. It might also lead to Naruto having to rely on others more than he's used to, which could be a big character - growth moment for him.