How it works?
This feature has been implemented in ImmortalsCo to ensure the fairest environment possible for the new players, Simply you'll find your character being damage-less (Not attack-able) until you reach (level 130 or 2nd rebirth) and +300 BattlePower. However, You will be able to disable it from your Class master at the Job Center.
As mentioned above it requires a lower than 300 BattlePower player and Level 130 1st Rebirth.
Please feel free to report any bug you experience using our support form