Envenomed Fang

Source
This item drops from:
 * Arcane Serpent in Borean Tundra
 * Frostwing Chimaera in Howling Fjord
 * Cobalt Serpent in Sethekk Halls
 * Coilskar Cobra in Shadowmoon Valley
 * Twilight Serpent in Nagrand
 * Shadow Serpent in Shadowmoon Valley
 * Spirit of the North in Borean Tundra
 * Guardian Serpent in Grizzly Hills
 * Serpent Defender in Grizzly Hills
 * Scion of Quetz'lun in Zul'Drak
 * Ice Serpent in Grizzly Hills
 * Arcane Wyrm in Dragonblight
 * Spitting Cobra in Gundrak
 * Unyielding Constrictor in Gundrak