There is no possible known way you can get a metal coat in PTD (Pokemon Tower Defense.) I hoped this helped ;)
You must have an Unown!
You can find the metal coat by going to route 32 (route before the ruins.) and going to the top most part of it. You will find a poke ball. go near it and press space to get a metal coat. Metal coat will also be unlocked in the item store!
A metal coat makes an Onix evolve into a Steelix.
You get a metal coat on Iron Island.
The Metal Coat can be found on Iron Island.
No, of course not. You have to trade it with a metal coat on
ptd can stand for people these days
You dont, you make the pokemon hold it
you catch a steelex and he may be holding a metal coat