| An Unseen Peril is a prophecy.
Open a strongbox. All normal monsters spawned become magic.
Price: ~ 1 Orb of Alchemy
An Unseen Peril only activates upon opening a strongbox, rather than entering a map, so multiple instances of this prophecy can be sealed and taken into the map as items and activated every time you wish to open a strongbox. This creates a strong synergy with Monstrous Treasure as well as modifiers to the Magic monsters of an area. Note that you will need to activate a new Unseen Peril before every strongbox you wish to open this way.