Almost a thousand years later, the Lich King Finneas Vilmar devised a plan to attack the human kingdom of Erathia. He allied himself with an Erathian general, Lord Haart, and poisoned King Nicolas Gryphonheart in 1164 AS. During the following Restoration Wars, Deyjan Necromancers took opportunity of the chaos that fell upon Erathian lands after the king's death. They resurrected the recently deceased king and made him a commander of undead legions in a fight against his former nation. But he, in an unexpected twist of fate, overthrew King Vilmar and became new lich king.
Not all of the lords of Deyja were pleased with this progress. Mot, a Death Knight, rebelled against the new Lich King, but was defeated. Then Necromancers raised an army of more than 2500 skeletons and invaded Erathia. They captured the northern borderlands. But some Necromancers, tired of Gryphonheart, defected to Erathia and with the aid of Erathia, Bracada and AvLee armies, drove their former king's armies back to Deyja. King Nicolas, after he avenged his death and killed his murderer, departed to his final rest.
Might and Magic VII
With the final death of Nicolas Gryphonheart and the end of the Restoration Wars, the throne of Deyja was taken by Archibald Ironfist, the former king of Enroth who sought to rebuild his power base and challenge his brother Roland again, as well as Roland's wife Catherine. Archibald first came to Deyja to help it in the war against Erathia, but the war was over before he could contribute anything to it. Archibald was disgusted by the incompetence of his fellow necromancers, and was determined to give them proper training and create research laboratories that would improve the necromancers' capabilities.
Archibald also received unexpected help from beyond the world of Enroth. As the Ultimate Adventurers from Terra broke up into two groups, one of them - namely, Kastore, Maximus, Dark Shade, and Tolberti, chose to side with Deyja in order to carry out their plans to repair the Heavenly Forges of the Ancients. The former Ultimate Adventurers became Archibald's advisors and the leaders of the Military arm of Deyja, with Archibald being at the head of the Science arm.
Archibald also worked to destabilize the relations between Erathia and the elven nation of AvLee, one of Erathia's allies in the Restoration Wars. A conflict broke out over the disputed territory of Harmondale, and Archibald did everything in his power to escalate the conflict. In particular, when Harmondale's Judge Grey died and the two sides declared a truce, Deyja's ambassador Scale recommended Judge Sleen as Grey's replacement, who intended to let AvLee and Erathia resume the war and raise the casualties as undead. That plan failed, however, as the Lords of Harmondale chose Bracada's Judge Fairweather as Grey's replacement, and peace was quickly brokered between Erathia and AvLee.
Following these events, a war started between Deyja and Bracada, with Deyja declaring war on Harmondale as well. Thanks to several missions carried out by the Lords of Harmondale, Deyja was losing the war, and Kastore staged a coup and ousted Archibald from Deyja's throne. Archibald fled Deyja along with the necromancers from the Science arm.
Kastore's plans to restore the Heavenly Forges also failed, as the Lords of Harmondale were the first to reach the Oscillation Overthruster, the key component required to repair the Forges, and used it instead to repair the Ancients' transporters that took them and the other half of the Ultimate Adventurers to Webstation Beta-5. The fate of Kastore and Deyja's Military arm after that is unknown.
Deyja means "to die" in Old Norse and Icelandic. In fact, the English word die descends from deyja, an Old Norse loanword that displaced native words like steorfan and sweltan.