Farseer Macha knew that the Orks' WAAAGH! was tied in some manner to the presence of the ancient artefact, and was adamant that the Forces of Chaos could not be allowed to obtain the Maledictum.

The forces of the Imperial Guard soon responded to the Greenskin assault, but the conflict with the Orks kept the Imperial forces engaged while Bale and his Chaos Space Marines worked unseen to recover their prize. The world's defenders had sent an astropathic distress call to the Imperium after Tartarus had been assaulted by an Ork WAAAGH! led by the Warboss Orkamungus which had been enticed to invade the world by Sindri Myr to serve as a cover for the Alpha Legion's pursuit of the Maledictum. A warband of Chaos Space Marines drawn from the Alpha Legion, led by the Chaos Lord Bale, made planetfall upon Tartarus before the Imperial forces ever responded. The Forces of Chaos were now aware of the existence of the Chaos marker and of the artefact itself. Unfortunately, the Alpha Legion Chaos Sorcerer Sindri Myr was also keen to acquire the power of the Maledictum to ensure his own ascension to Daemon Prince, and so set in motion a scheme that would uncover the artefact and unlock its power for himself. The Maledictum was a prison built by the Eldar millennia before to contain a powerful Greater Daemon who had been rampaging through that sector of space. When an Imperial excavation team on the Imperial Civilised World of Tartarus uncovered a Chaos marker that leads to an ancient artefact called the Maledictum, Macha mobilised a small Eldar force to ensure that the ancient artefact she had left buried on that world was left undisturbed.

Macha arrayed in her fearsome panoply of war

Warhammer 40000 taldeer's quote