Bones reaches level 3, it will require the use of a basic skill stone to upgrade.【Copper Skin Iron Bones (Level 3)] : Passive Skill, Endurance 15, Strength 15, Damage Reduction -15Learning requirem...g nodded slightly.He also had to admit, a peak-level demon lord wouldn't be something other players could handle without him.Only by massing a large number of players and combining it with real-world...