Arc 6The Fall of Lordaeron
Thrall’s Fel-corrupted rise brought Lordaeron to ruin as Arthas and Robbie uncovered Kel'Thuzad’s legacy and the runes’ power. The arc left Hearthglen in Barthilas’s hands after Tirion’s secret bargain with the Orcs collapsed, while Arthas continued seeking a way to master the runes and confront Medivh.
- Medivh revived Saurfang on the Fel altar, then learned Kael'thas had sought Kel'Thuzad’s help to impress Jaina and ordered the captive prince to kill the mage.
- Thrall and Grommash Hellscream fought for control of the Orcs, but Sylvanas and Saurfang killed Thrall, allowing Broxigar’s evil soul to emerge and corrupt Sylvanas.
- The resurrected Thrall slaughtered the Warsong Clan, seized control of the Orcs, and killed King Terenas after Medivh urged Lordaeron’s people to flee west.
- Medivh searched Dragonbone Plain for Frostmourne and triggered a volcanic eruption, while Arthas and Robbie taught runes to the Undead and Kel'Thuzad passed his spirit crystal and leadership to Arthas before dying.
- Uther, Thrall, and Sylvanas’s forces were overwhelmed by the Undead at Andorhal, and Jaina teleported the commanders to safety as Arthas watched from afar.
- Experiment 335 taught Barthilas to combine the Scourge Rune with a Holy Light Rune, awakening his power, while Arthas discovered that a fourth Holy Light Rune had appeared in Hearthglen.
- Tirion Fordring fought Eitrigg, survived a collapse through Barthilas’s healing, and later secretly negotiated to surrender Hearthglen in exchange for his family’s safety and a share of the spoils.
- Barthilas exposed Tirion’s deal, defeated Eitrigg, and claimed Hearthglen for himself, forcing Tirion to flee after Barthilas threatened his son.