[0.85 ~ 0.857 version update]
* Mastery system is added.
* Artifact slots are changed to unlimited.
* When acquiring a treasure chest, 3 artifact options are given.
* The research system has been reorganized.
* Difficulty and rewards for each zone will be adjusted.
* The stat increase per magic level is applied differently for each level.
* Level 5 attributes of level 10 attack magic, except for magic bullets, will disappear.
Too many death magics have been abused for the decades of wizard war...
The spirit living in nature becomes a demon by remnants of the magics that pervaded it, and it devours all living creatures.
Wipe out infected spirits coming from everywhere with various magic
