Item from harry-potter-half-blood-prince by
The most powerful wand ever made — its allegiance passes from Dumbledore to Draco when Draco disarms him, though no one realizes it yet.
Dumbledore wields the Elder Wand but plans for its power to die with him — Snape kills him by arrangement, so the wand's allegiance shouldn't transfer. But Draco disarmed Dumbledore on the tower before Snape arrived. The wand's allegiance passed to Draco. Nobody knows this yet.
A fifteen-inch elder wood wand with a Thestral tail hair core. It looks ancient, slightly different from other wands.
Also known as: the Elder Wand, the Wand of Destiny, the Deathstick