Dumbledore had hoped, by having the Elder Wand placed with him in his tomb, that the power of the Wand would then be ended; the wand would transfer its allegiance to the latest person who had captured it, and as Snape had killed Dumbledore, it would be Snape to whom the wand owed its allegiance.
Dumbledore is buried, and the Elder Wand is laid to rest with him as his personal wand. Some time later, Voldemort finds out about Dumbledore's mastery of the Elder Wand and robs his grave as a consequence.
Dumbledore got the Elder Wand by defeating Grindelwald in their legendary 1945 duel, which sees Albus face off with and conquer his former friend turned great rival once and for all and take the wand for his own as its rightful new owner.
They did not know his wand had any special value, so they would not have known to protect the tomb in any way. In any case, it would have been dangerous to protect the tomb with powerful curses in a school where most accidental victims would be children who strayed too close.
Since whoever owns the elder wand has immense power Harry decides it's best to destroy it. However, in the books, Harry doesn't break the wand; he puts it back in Dumbledore's tomb. Harry discusses his decision with Dumbledore (when he is in sort of limbo before defeating Lord Voldemort for the last time).
This nuance was lost on Lord Voldemort, who wrongly assumed Severus Snape held the Elder Wand because he was Dumbledore's killer, when in reality Draco had disarmed Dumbledore before Snape arrived on the scene, making Malfoy the wand's true new owner.
Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
Gaunt's ring
The ring was hidden in the remains of the Gaunt family shack, and the defensive spells placed around it had to be overcome by a very powerful wizard. After retrieving the ring Albus Dumbledore himself fell victim to a curse that, even when contained, would likely have killed him within the year.
Draco Malfoy's mother Narcissa was cold, cunning and devoted to the Dark Lord. But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
“Dumbledore didn't want to lose his wand at that point and Draco disarmed him. So that meant that the wand gave Draco its allegiance, even though Draco never knew it, even though Draco never touched it. “From that moment on, that wand gave its allegiance to Draco, and it wouldn't work as well for anyone but Draco.”
James Potter inherited the Cloak of Invisibility from his father Fleamont Potter. Fleamont was a descendant of Hardwin Potter who married Iolanthe Peverell, the only daughter of one of the descendants of Ignotus Peverell, the original owner of the Cloak of Invisibility.
Voldemort then took the Elder Wand from Dumbledore's grave, but the wand never really obeyed him because it was Draco who disarmed Dumbledore in Harry Potter and the Half-Blood Prince. Eventually the Elder Wand came into Harry Potter's possession, and he decided to snap it in two and throw it away.
Why did Albus Dumbledore try to pass the Mastery of the Elder Wand on to Severus Snape? A couple of reasons; the late headmaster want to divert the allegiance of the Death Stick away from Lord Voldemort. And once Dumbledore was gone, he was hoping the power of the Elder Wand would die with him.
Dumbledore knew it meant Harry would need to die in order for Voldemort to truly die, so he was pleased to know that Voldemort's mistake in taking Harry's blood might just save Harry's life. DUMBLEDORE: [Voldemort's] body keeps her sacrifice alive, and while that enchantment survives, so do you . . .
His exceptional magical abilities, immense knowledge of various branches of magic, and strategic thinking make him a formidable wizard. Dumbledore served as the Headmaster of Hogwarts School of Witchcraft and Wizardry, was a highly skilled duelist, and possessed incredible wisdom and intuition.
The Emerald Potion, also known as the Drink of Despair, is a mysterious potion which induces fear, delirium, and extreme thirst. According to Dumbledore, the potion cannot be penetrated by hand, vanished, parted, scooped up, siphoned away, transfigured, charmed, or otherwise made to change its nature in any way.
Snape having the same Patronus, the doe, as Lily symbolized his everlasting love and unwavering devotion towards her. He hadn't stopped loving her after their last altercation, marriage to James Potter, or death. She was his "always," his guiding light, and he protected Harry for her.
Teddy, Newt's niffler, manages to steal the blood pact vial from Grindelwald at the end of the second film. The vial, contained in an amulet on a necklace string, is the physical manifestation of the blood pact that the two had undertaken in order to prevent them from harming each other.
Another feature in The Secrets of Dumbledore that demanded Image Engine's attention was Gellert Grindelwald's pendant—a chain and phial that contains the blood of both Grindelwald and Dumbledore following a blood pact made in their youth.
Though Harry encountered many opportunities that deemed Avada Kedavra necessary, it remains as one of the Unforgivable Curses Harry Potter never cast. For one, he viewed the spell as an immoral practice commonly used by users of the Dark Arts.
Lily's Protection In Voldemort's Blood Saved Harry
When Lord Voldemort returned Harry Potter and the Goblet of Fire, he used Harry's blood - which is partially how Harry survived Avada Kedavra in the forest.
The Death Eaters and the Dark Lord don't simply cast Avada Kedavra on everyone all the time because it doesn't suit their long-term goal of ruling the world and having a wizard-run society.