Metal Limbs

A number of your limbs were lost somehow. In their place now are inarticulate metallic prosthetics. You gain the following traits.

• Creatures are unnerved by your the sight of your body's damage; those with goodness in their hearts may show you special kindness, but those who are shallow and cruel may see you as a monstrous dreg. You have advantage on intimidation ability checks, advantage on persuasion ability checks against good-aligned creatures, and disadvantage on persuasion ability checks against evil-aligned creatures.
• Unarmed strikes made by your prosthetic limbs deal 1d6 bludgeoning + your strength modifier damage on a hit if your normal unarmed strike damage die is not higher.
• When you make an attack on your turn, you can make an unarmed strike as a bonus action.
• As a reaction, you can gain resistance to nonmagical bludgeoning, piercing, and slashing damage from attacks made by creatures who haven't attacked you previously. If a creature sees you resist bludgeoning, piercing, or slashing damage using this feature, or is familiar with the specific location of your prosthetic parts, you lose each of these resistances in regards to that creature's attacks.
• You have disadvantage on all acrobatics ability checks, as well as athletics ability checks made to climb, jump long distances, and swim.
• You have vulnerability to cold and lightning damage; attacks which deal lightning damage are made against you at advantage, and your Dexterity saving throws to avoid effects dealing lightning damage are made at disadvantage.