From publisher blurb:
FOURTHCORE ARMORY is a supplement designed to offer Dungeon Masters and players new options and rewards suitable for their fourthcore adventures. Items in this book share the following traits:
Dramatic. Many of the items in the ARMORY have overly-dramatic secondary effects, such as moving the sun and moon, sending whispers through time, or destroying entire worlds.
Narrative. Items in the ARMORY often have abilities that give the dungeoneers narrative boons, such as the ability to steal the body of a monster or instantly raise a valley of crops.
Powerful. Though compatible with items such as those found in the ADVENTURER’S VAULT, treasure in the ARMORY is intentionally more powerful, prominent, and complex.