You get +2 con and +1 str because you are made of copper.

You get a disadvantage when hiding because you are big and made of copper, so you stand out.

Enemies that attack you with a piercing weapon get a -1 when determining if they hit you.

Heal yourself for 1 d10 if you have a hammer. This will take 1 hour to do.

enemies do half the damage for 1 turn 1 time per long rest

You can make someone your master. You cannot go more than 400 ft away from your master, but if they are within 10 ft and are about to get hit, you can jump in front of them and take the hit. If it is a killing hit, you can do this from 15 ft away.

Your unarmed strikes do 1 d6 +con modifier+strength modifier. Hooray