The Oracle ( Chapter ) The Oracle is chapter 7 of the orc campaign , The Invasion of Kalimdor . Battle . Journeying into the depths of Stonetalon Peak , the Horde forces came to a cross roads . Thrall suggested they split up to find the end of both passages . Thrall and a party of Orcs and Trolls took the right path , while Cairne and his Tauren warriors took the left . Cairne warned Thrall to be careful , since all manner of creatures dwelled within the mountain ' s depths . The Orcs journeyed through the winding tunnels of the mountain , coming under attack from undead , quilboars , kobolds and other monsters , as well as parties of humans , dwarfs and elves ordered by Jaina to delay their advance . Eventually , they came to a sealed chamber containing a statue of a Night Elf princess . The statue communed with Thrall , identifying itself as Aszune , and that none could pass until her ' heart ' was returned to her . Returning into the tunnels , the Orcs came upon a band of harpies attacking a red dragon . The Orcs waited until the harpies had killed the dragon , then fell upon the harpies , killing them all and recovering from the dragon ' s hoard the gem known as the ' Heart of Aszune ' . Thrall returned the gem to the statue of Aszune , freeing her spirit and opening the way to the chamber beyond ; the lair of the Oracle . However , there was no way to cross ; Thrall reasoned a spectral bridge was present , but there was no way to access it . Thrall hoped Cairne might find a way to activate it . . . Cairne and his tauren kin meanwhile proceeded down their path , encountering similar resistance from the denizens of the mountains . At a junction in the tunnels , they came to an outcrop overlooking a pit full of Quillboars ; too many for the Tauren to defeat . However , Cairne noticed the pit was in fact a spiked trap , and triggered the device , killing all the quillboars in the pit . Sifting through the bodies , Cairne recovered a strange gem which he recognised as the spirit stone required to activate the spectral bridge to reach the Oracle . Proceeding through the caverns , Cairne and his men rejoined with Thrall in the chamber and activated the bridge , crossing into the Oracle ' s chamber . . . Jaina and her forces were already present ; upon seeing the Orcs had caught up to them , Jaina and her forces prepared to fight to the death , but a stern voice rang out , demanding that there would be no violence in the place . Thrall recognised the voice ; they were not speaking to an oracle , but the Prophet . The Prophet confirmed this , and stated he had brought them to the place for a purpose . The Prophet explained that the Burning Legion had returned ; having already annihalated Lordaeron , Kalimdor would be next to feel their wrath . Only by uniting would the humans and Orcs be able to resist the oncoming shadow . Jaina dismissed such an idea as madness , but the Prophet impressed upon her the severity of the threat posed by the demons . He told Thrall that the demons had already corrupted Grom Hellscream and that if they didn ' t act soon , he and the entire Orc race would be lost to the demons forever . Thrall refused to let this happen , insisting he would die before he let such a thing occur . The Prophet explained that Hellscream was key to the destiny he had promised the Orcs , but that Thrall would need help to free Grom . Jaina tried to back out , but the Prophet was adamant ; for the sake of all Azeroth , the Alliance and the Horde must ally together .