Serathil

Serathil is a one-handed axe. It is a world drop, and one of few items to be in both Warcraft III and World of Warcraft.

The Frozen Throne

 * This massive axe is covered with notches and orcish runes.

Serathil was crafted on Draenor for Kash'drakor and used in the Blood River war that ended with the annihilation of the Dark Scar clan. Nazgrel is the last living relative of Kash'drakor. The weapon was obtained by Rexxar after he killed Kor'gall.

Warlords of Draenor
Serathil was in the possession of Kor'gall on the alternate until it was obtained by the adventurers and delivered to Gladiator Akaani in The Axe of Kor'gall.

In the RPG
Rexxar sought to join the Stonemaul clan. Their leader, the tyrannical Kor'gall, had discovered the ancient orcish axe Serathil and used the artifact to control the clan. He forced Rexxar to undergo the Trial of Strength, running a monster-filled gauntlet, to join. Rexxar succeeded, but Kor'gall still refused to help the Horde. Rexxar sensed the corruption within Kor'gall and slew the ogre chieftain in the Trial of Blood, earning Serathil and assuming control of the clan to lead them against the Alliance.