Previously, the Ancient Demon Prison was upgraded into Godly Demon Prison, and it helped Ethan a lot in the Feral Mountain Realm.
What's more, it was still helping him host the Cultivation Sessions to speed up the cultivation of his subordinates.
[To upgrade the Ancient Evil Tree to a Godly Artifact, it requires only 10 units of God Essence]
[Chance of failure: Zero Percent]
As soon as he took out the Ancient Evil Tree, Ethan received the system notifications.
The Ancient Evil Tree was pitch black, its twisted branches wriggling like living serpents, and faint dark mist constantly leaked from its bark.
Even though there is a word 'Tree' in it, it was not actually a tree but an artifact.
'It requires the same amount of God Essence as that of the Ancient Demon Prison to upgrade.'
Looking at the system notifications, Ethan smiled as he muttered, 'Even if it was 100 units of God Essence, I would be willing to spend it to upgrade the Ancient Artifact.'
