This connection is Priori Incantatem, which causes Harry to be able to have more power in his wand because when he dueled in the cemetery with Lord Voldemort in The Goblet of Fire, he absorbed some of Lord Voldemort’s power which made Harry capable of conjuring spells which his was unaware that he was able to do. (Goblet) He ends up having much stronger powers then anyone had imagined for such a young wizard. This makes him a role model to other students at Hogwarts, and causes them to want to join forces with him to form Dumbledore’s Army in The Order of the Phoenix.(Order)
In the Wizarding world, each magic wand is made from wood and has a magical core. Mr. Ollivander is a wand maker in Diagon Alley and the wands he makes have one of three cores: dragon heartstring, unicorn tail hair, or phoenix feather. Harry and Lord Voldemort both have wands that share the same core from the same source. This makes it so the wands will not function against each other, instead the wands react strangely and do not conjure the spells which have been cast correctly.
When a wizard goes to get a wand they don’t choose the wand it chooses them. When Harry goes to get his wand, he goes through many to get to the one that is meant for him. The wand that is meant for him is a combination of phoenix feather and holly, which is not often seen in the
Cited: Harry Potter and the Sorcerer’s Stone. Dir. Christopher Columbus. Prod. David Heyman. Perf. Daniel Radcliff, Rupert Grint and Emma Watson. Warner Bros. 2001. DVD Rowling, J[oanne] K[athleen] Scholastic, 2007. Print. --- Harry Potter and the Order of the Phoenix. New York: Scholastic, 2004 Print. ---Harry Potter and the Sorcerer’s Stone. New York: Scholastic, 1998 Print “Horcuxes.” The Floo Network The Harry Potter Lexicon