In this fanfiction, he could gain the power of energy absorption. This means he could absorb any type of energy, be it magical, alchemical, or even kinetic energy from attacks against him and then use it to his advantage. For example, if an enemy attacked him with a fire - based spell, he could absorb the energy and then release it back as a more powerful attack. Or he could gain the power of astral projection, allowing his spirit to leave his body and explore places or gather information that would be otherwise inaccessible.
If he gains new powers, it might make some of his friends a bit wary at first. They could be afraid of how much he's changed. But his close friends like Alphonse would probably try to understand. His enemies, on the other hand, would see him as an even greater threat. Some might try to form alliances against him. Overall, it would shake up his relationships as people adjust to the new Edward with these powers.
In some fanfictions, Edward Elric might gain the ability to manipulate time. This could be a really cool addition as it would allow him to go back and correct mistakes he made in his past, like the failed human transmutation that cost him his arm and leg.
Well, Edward's alchemy could be combined with Urahara's spiritual energy. For instance, Urahara could use his spiritual power to enhance Edward's alchemy transmutations. Or Edward could use his alchemy to create structures or tools that help Urahara in his battles against Hollows.
Perhaps he gets a power related to mind control. This would allow him to influence the actions of his enemies or even make them fight among themselves. He could also gain a power that lets him absorb the powers of his defeated foes. So, every time he defeats an enemy, he becomes stronger by adding their powers to his own arsenal.
It could be an ancient and powerful wizard. Maybe the wizard sees potential in Beast Boy and decides to grant him new powers to help him in his fight against evil.
His new powers might make some of his friends a bit wary at first. They could be worried that he's changing too much. But as they see him use his powers for good, they'll likely become more accepting. His enemies, on the other hand, will be more afraid of him and might target him even more.
Well, he might become more confident. With new powers, he has more abilities at his disposal, which could make him bolder in facing challenges.
Well, new powers in the comic might include the ability to time travel or have elemental manipulation. Sometimes these powers are introduced to add excitement and new challenges for the characters.
He would likely still have his chakra powers. Maybe he could use chakra in ways that were similar to alchemy, like transforming matter. For example, he could use his chakra to change the shape of a rock into a weapon, much like how alchemists transmute materials.
One possible power could be telepathy. A new hero with telepathic powers could read the minds of enemies, anticipate their moves, and also communicate silently with the other Avengers during missions. This would give the team a huge advantage in battles.