He may face challenges from within the student body as well. Different houses have their own rivalries and interests. Convincing all the students to follow his lead can be difficult. For example, Slytherin students might be skeptical of Harry's leadership at first.
One challenge could be resistance from the existing authority. There might be some teachers or administrators who don't want to give up their power easily. They may see Harry as too young or inexperienced.
One challenge could be dealing with the traditionalist teachers and pure - blood families. They might resist any changes Harry tries to make as they are used to the old ways. For example, if Harry wants to introduce muggle - born friendly policies, some of the old - school pure - bloods might oppose it.
One challenge could be controlling the extent of his power. For example, he might accidentally cause a huge overgrowth of plants that start to overrun the Hogwarts grounds. It's difficult for him to fine - tune his ability at first.
One challenge could be the lack of the traditional focus for his magic. Without a wand, he might struggle to direct his magic precisely. For example, when he tries to cast a simple levitation spell, he may end up making objects fly out of control.
The Dementors are a huge challenge. Their presence alone can drain his happiness and will to escape. He has to find a way to avoid them or protect himself from their effects.
One challenge could be controlling the intensity of the ice. If he makes it too cold or creates too much ice, it might harm his friends or the surrounding environment. For example, if he's in a room and loses control, he could freeze everything and everyone in it.
One challenge could be controlling the intensity. Lightning is extremely powerful, and if he doesn't have proper control, he might end up causing more harm than good. Another might be the unpredictability of the element itself. Lightning doesn't always behave as expected in nature, and it could be even more difficult to manage magically. Also, he may face opposition from those who fear his power or think he's becoming too powerful.
The legal system in some fanfic settings might not recognize slavery as an illegal practice immediately. Anakin would have to fight through bureaucracy and convince lawmakers to change the laws. There could also be cultural acceptance of slavery in certain areas, and Anakin would have to overcome the deeply - rooted beliefs of the people there.
One challenge could be controlling her powers. Since the elements are powerful and unpredictable, it might be difficult for her to master them completely. For instance, she might accidentally start a wildfire while trying to use the fire element for a small task.
He also has to deal with the secrecy around wand - making. Since it's a highly guarded art in the wizarding world, he might face opposition from the Ministry of Magic or other wizards who think he's meddling in something he shouldn't. Plus, he has to make sure that the wand he crafts is unique to him and suits his style of magic, which is no easy feat.
Politics within Asgard could be a challenge. There may be different factions or groups who have different opinions about allowing an outsider like Harry to become a member. He might have to navigate through these political intrigues and gain the support of key figures in Asgard, like Thor or Odin, in order to finally become a member.