The story of Diablo 1, Diablo 2, and Diablo 3 doesn't fully explain all the lore of Diablo. In episode 4 of this Diablo lore series, we look at the return of Lilith & Rathma, and who the Edyrem were - the second generation of Nephalem - and their leader, Uldyssian. Could any of this lore be relevant to Diablo 4? Could Diablo 4 be a prequel? Sources: http://diablo.wikia.com/ https://diablo.gamepedia.com/ More Diablo 3 Reaper of Souls guides, builds for all classes - Demon Hunter, Witch Doctor, Crusader, Barbarian, Monk, Necromancer, and Wizard:    • Diablo 3: Reaper of Souls Guides   ▬ Subscribe for more videos ►http://bit.ly/RhykkerSub ▬ Follow me on Twitch to join me when I play: ►http://bit.ly/1v5gqDu ▬ Patreon rewards: https://www.patreon.com/rhykker ▬ Follow me on Twitter for updates: ►https://twitter.com/rhykker Executive producers: Kiskaloo, MohEternal, NickTick, Recramorcen, 2hoste, Sarge9017 Special thanks: Maia Nashira, Toioiz, Remiehneppo, Neme5i5, Matthew Feiteira, Toioiz, Joel Williams, MONGAS INC., Terry Lee, Valentine Judnich