"All attributes +15" essentially meant a staggering amount of free attribute points for Sheyan -- an amount in the hundreds! More importantly, that was only the first property of the equipment!
The second property was: [ When the owner is affected by any negative statuses which affect movement speed, Defence will increase by 15 and HP will increase by 500. If the negative status is caused by a contestant, the buffs are doubled. ]
The third property was: [ The owner's movement speed will have a guaranteed minimum limit. This special effect has domain precedence. This special effect ensures that the owner's minimum movement speed will never be lower than 75% of maximum movement speed. ]
And the fourth property was: [ Reduce 10% of all damages. If the damage is caused by a contestant, the reduction becomes 15%. ]