Overview From PoxNora Faction Profile:
Diseased zombies, undying liches and risen corpses comprise the never ending undead army of the Forsaken Wastes. The Forsaken Wastes faction has the ability to overrun enemies due to its low-cost champions and its ability to quickly summon units back to the battlefield once destroyed. If you enjoy playing a slow developing but never-ending army of undead champions, The Forsaken Wastes may be the faction for you. Note: Forsaken Wastes tends to be best played by more advanced players.
Faction Bonus:
Split Faction: Champion runes you own have their cooldowns reduced by 30%
Full Faction: Champion runes you own have their cooldowns reduced by 60%