Gordok Ogre Suit

The Gordok Ogre Suit is required to do a Dire Maul Tribute Run in Dire Maul North. It changes the player into an ogre for 10 minutes, allowing them to bypass the last guard and continue to the King.

Source
This item is created by giving Ogre Tannin to Knot Thimblejack inside Dire Maul North.

Before Patch 4.0.3a, Knot Thimblejack asked for:

In addition, Knot Thimblejack would teach high level Leatherworkers and Tailors to create the suit with half the materials. The crafter needed a skill level of 275 in their respective craft.