Blood Pact

The Blood Pact was a demonic ritual undertaken by orcs of the planet Prarvis in the Aeon of the Champion story series performed about 10 years before the birth of the Genesis Link. It was commanded by Vez'nan, First Warlock and leader of the Genesis Order, at the behest of his master Tiz'galath.

The ritual involved orcs, from all clans, infusing themselves with the essence of the corrupted giant Surtyr, drinking his blood in order to gain demon-level strength, aggression and speed, in preparation for their invasion of Middle-Earth. Almost every orcish clan - including former shaman Ota'tok's clan, the Moonbrand - fell to the curse, except for the Steelhammers led by Kazzakh, who hid in the thickness of the Kiba jungle to avoid taking part in the ritual. However, Kazzakh's noble heart was tested when his best friend and assistant, Agekh, betrayed the clan and reported him to Vez'nan and Tiz'galath. Furious, Vez'nan had jungle after jungle levelled in search of him, but was unsuccessful. Instead, Vez'nan had the Lok'tar Guard - the finest orcish warriors on the planet - arrest his daughter Mehla and deliver her kicking and screaming to his folds. He then left tortured her into revealing her father's whereabouts, but relented after Il'grogg suggested turning her into something useful. Agreeing with the ogre mage, Vez'nan put Mehla in the charge of Orguld Cruelfang, who bullied and hectored her into becoming a skilled spymaster.

Meanwhile, Kazzakh allied himself with Exarch Versa and her Eldari, hoping to help them to escape from the wrath of the orcs. Thanks to his intel, they were able to stay one step ahead of Tiz'galath at every turn.

Trivia

 * In Warcraft, a very similar pact was held between Draenor's orcs and the pit lord Mannoroth.