How do you get the metal slime armor in dragon quest 9?

u buy it in the casino in bucratt for 50,000 tokens then u can combine it with orcheliun to make metal king armor well actually, u can do that, but i dont recomend it. I recomend either getting it from princess minnie as a reward for like 100 tokens or either waiting until u unlock dragovian sanctuary, in the cave, theres a chest with the armour in it.