Spring Energy
Can be used to obtain a higher-level item through compounding with Blue Earth Chest. Can be compounded with Blue Earth Chest Lv. 1-9. In case of failure, Blue Earth Chest does not disappear, but its level drops by one. Only Spring Energy is destroyed.
Not dropped by monsters.
Cannot be spoiled.
The chances are official (x1). On servers with x10, x100 and higher rates, drop and spoil come more often.