Because of your integrated machinery, you can choose to overclock the mechanical portions of your body to augment an attack roll or specific ability check by rolling an additional d6 beforehand. You can use this ability with a number of charges per long rest equal to your proficiency bonus +3
When rolling a d6, add the value to the attack damage, unless the role is a 1, in which case your augmentation malfunctions and an action or bonus action must be taken on the next turn to repair it before you can attack again, or use the mechanical appendage.
In the case of ability checks, you can expend a charge and roll a d6 if the ability check is something relating to your augmentation, and will give you advantage on the check, with the exception of rolling a 1, which will be a malfunction, and an automatic failure.
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