Andor's Trail

These rings minimumly doubles the value of exp from Monsters.

Where it came from was the shadow people's boss sent them to a place around the farm. Causing a rip in dimensions?

In each dimension you go to there are stronger and stronger same type monsters that was originally in the native maps. Mostly in the area of where shadow crossings happen.

In each Dimension there are different bosses, in which different Legendary Equipment.

Once each consecutive pieces of From The Shadow are present amplified bonuses to the wearer is noticed.

Rings, necklace, gloves, Helmet, boots and shield. The sword is later in the game, where the rips of crossovers are amongst the clouds.

That doesn't really fit with the game. It's a nominally medieval world. Monsters can come through rifts, but you can't go to where they came from. You exist only in your own world / dimension. There is no magic, at least no magic that you can control. There are potions, certain equipment has interesting properties, but that is all.

Ok.

So then,