How to get a Carrot on a Stick

Go to the Mirage Raceway area of Shimmering Flats in Thousand Needles and speak with Wizzle Brassbolts to start the Gahz'rilla quest.

Head to the Altar of Zul area of the Hinterlands and kill Qiaga the Keeper who will drop the Sacred Mallet

Take the Sacred Mallet to the top of the Jintha'alor area in the Hinterlands and use it on the alter near the Vile Hexx Priestess

Doing so will convert the Sacred Mallet into the Mallet of Zul'Farrak

Take the Mallet of Zul'Farrak to the Zul’Farrak instance and Gong the Zul'Farrak Gong, which will summon Gahz'rilla.

Kill Gahz'rilla who will drop Gahz’rilla’s Electrofied Scale

Go to the Mirage Raceway area of Shimmering Flats in Thousand Needles and give Gahz’rilla’s Electrofied Scale to Wizzle Brassbolts to receive the Carrot on a Stick