The Earthen of the War Within are interesting — similar to our own Dwarves and yet unaffected by the Curse of Flesh… Or are they affected after all?
Nobbel87 speculates... Warning: War Within Alpha Spoilers Ahead Curse of Flesh Origins I was working on typing out some of the side quests for the Isle of Dorn, but quickly realised that there’s an interesting subject to talk about which relates to established lore and some of the lore that's coming up: the Earthen and the Curse of Flesh.
The Curse of Flesh originates from Yogg-Saron manipulating events at Ulduar to break out of his prison. Starting with Keeper Loken, he worked on taking over his jailers.
Loken was then manipulated into using the Forge of Wills to create more of their Titan-forged and, unbeknownst to Loken, Yogg-Saron had added his Curse of Flesh to the machinery, tainting its creation matrix.
Any Titan-forged created by the machine thereafter would fall victim to its affliction. Some would even spread it to previous generations of the Titan-forged.