What DID it come from?
A 2 Gift Extra Appendage Power used by Edward Grimm, created by Lerinyth.
A mechanical arm sprouts from my left bicep. Brass and leather, it moves just a normal arm would. Maybe it can be modifiable?
Your Extra Appendage functions either as a replacement body part of a standard humanoid arm and hand. Any Battle Scars on your Extra Appendage, including its complete loss, can be healed over one Downtime.
This Power is passive and always in effect.