Deep Abyss may be found in the Unhatched Dragon Egg of Hiding which is a random drop out of treasure chests found within Column of the Prophet. A regular right click egg that is not able to be incubated may also be rewarded from the "Careless Adventurer's Backpack" bought from the Dragonscale Seal Quartermaster located in Arteicia beside the Column of the Prophet Battle Herald for 1200 Dragonscale Seals. Deep Abyss also has a chance to spawn during the Prophet Dragon God stage inside the Column.