It's Generation 8, and there are a new series of items that GameFreak has added. Elemental Armors. What they do is basically add a type to a pokemon. If the pokemon has two types already, the armor adds it as a third type, and would act similarly to Forest's Curse and Trick-Or-Treat. If you give an armor to a pokemon of the same type, it will do nothing to it.

What changes? What pokemon could get more use out of an extra type? Think both defensively and offensively, and for individual pokemon.

Inb4 Steel Armor is the most used