Prestor's Talisman of Connivery

Prestor's Talisman of Connivery is neck armor that was highly sought after by hunters prior to the release of The Burning Crusade expansion due to it's high agility bonus.

Source
This item drops from Nefarian, final boss of Blackwing Lair.

This item is also very valuable to meele dps classes rogue and fury warriors because of the + to hit chance. A hunter will reach max + hit effectiveness at + 6% from gear, while a rogue needs + 16%, and a fury warrior even more than that!

Name Origin
The name is a reference to the human alias Daval Prestor used by Nefarian's father, Deathwing, to infiltrate the Alliance. Onyxia uses the name Lady Katrana Prestor for the same purpose as a royal adviser in Stormwind City.