It could be a mysterious stranger. Maybe someone who has been observing Harry from afar and decides that he needs a different wand for some greater purpose. This stranger might have their own motives, perhaps related to a prophecy or a hidden plan within the wizarding world.
Another possibility is that Harry stumbles upon the different wand himself in an old, forgotten place like an ancient wizard's lair. It could be that the wand was left there for a reason, and Harry, being the curious and brave boy he is, discovers it and decides to use it, not fully realizing the implications it will have on his magical journey.
Perhaps Dumbledore gives Harry the different wand. Dumbledore is always full of surprises and he might have foreseen that Harry would need a different wand to face new challenges. He could have obtained the wand from a secret collection or had it specially made for Harry.
In fanfiction, Harry with a different wand can lead to all sorts of interesting scenarios. Maybe the wand has different magical properties that he has to learn to control. For example, it could be more powerful in certain types of magic but less so in others. This would force Harry to adapt his magical techniques.
It could be from a far - off land. Maybe it was crafted by a reclusive wizard in a distant mountain range. This wizard might have used unique materials and spells to create it, and for some reason, the wand made its way into Harry's hands.
Maybe an old, reclusive wand - maker who has been waiting for the right wizard to come along. This person could have a special intuition about wands and see something unique in Harry.
The different wand might change his abilities in terms of spell specialization. Say the new wand has a different wood that is attuned to certain types of magic. If it's a wand made of willow, which is often associated with healing magic, he could find himself more proficient in healing spells, even if he wasn't before. This would be a significant shift in his magical abilities as he would be able to contribute in a different area of magic within the wizarding world.
If Harry has a different wand in this fanfiction, it could mean that his magical abilities are altered. His proficiency in certain types of magic might increase or decrease. The wand might also attract different kinds of magical creatures or objects towards him. It could be that the wand was made by a less - known wand - maker, and this could introduce a whole new aspect of the wizarding world's craftsmanship and lore.
It could be Dumbledore. He always had a way of presenting Harry with things that would help him on his journey. Maybe Dumbledore had been holding onto this second wand for a special occasion or because he knew Harry would need it in the future.
His second wand could be made of different materials. For example, his first wand was holly and phoenix feather, but the second might be made of yew and unicorn hair. This difference in materials could lead to different magical properties.
In the world of Harry Potter fanfiction, wand cores can be quite creative. One type that might show up is the hair of a hippogriff. Hippogriffs are proud and noble creatures, so a wand with their hair as a core could have a certain grace and strength. There are also those that might use the scales of a mermaid. This could give the wand a connection to water magic, perhaps having special abilities when it comes to spells related to water or the sea.
In some fanfictions, wands might be made from rare materials not mentioned in the original books. For example, there could be wands made from the scales of a magical sea creature, which gives the wands unique properties related to water magic. Another idea could be wands that are passed down through generations and gain extra power with each new wielder.
Well, if Harry gets a different wand in the fanfiction, it might change his relationship with other characters. For example, wizards might view him differently based on the new wand's appearance or reputation. Also, the new wand could have a different origin or history that gets intertwined with Harry's journey, opening up new storylines and adventures.