FYI: I am ripping this idea off for an Oathbreaker's Ring [-2] item that alerts to the presence of nasty supernaturals and allows a person to use the Worldwalker power. Basically you aren't just warned when nasties are around, you can also perceive (and traverse) weaknesses in the veil (where nasties may leap out of).
The catch is that the ring doesn't just warn of nasties that are after you. So it can easily lead to paranoid characters.
I'll post it when I am finished.
Oathbreaker's Ring [-2]
Description: Folktales claim some mortal practitioner made a deal with a fae broke a deal and to evade punishment made this ring to always have a warning when debt collectors may be on the way. For years--some say until he died of old age--the creator was believed to have evaded all attempts to settle up accounts. Despite the name, the ring functions for any wearer, not just Oathbreakers. Over the generations various wearers have used the ring for very different purposes and the ring has developed into quite the tool for traveling the Nevernever.
Musts: An aspect directly referring to the Oathbreaker's Ring (doesn't have to relate to Oathbreaking).
Skills Effected: Alertness, Investigation, Lore, Survival
Effects:
It Is What It Is. The Oathbreaker's Ring is a ring has a large polished black opal set in it.
Supernatural Sense. You may roll Alertness to notice the ring has shifted colors (only the wearer can perceive this change, to everyone else it remains solid black) when in the presence of supernatural beings much the same as how Lore can be used for mystic perception. You are allowed this Alertness roll even in situations where you would normally be denied one.
Rift Sense. *cut for space*
Rift Maker. *cut for space*
Strange Worlds. *cut for space*
Discount Is Already Applied. The +1 refresh discount for being an item of power has already been applied.
It is sort of like Death's Cloak of Invisibility. But instead of hiding, it warns and allows for potential escape. The Lore skill isn't even necessary for the Oathbreaker's ring.