@devonapple
I like the idea in theory, though I think 'a particular supernatural sense' is likely TOO uncommon to be worth a discount, rather like having a veil that doesn't obscure taste: how often is that going to matter?
Lore's generic Mystic Perception trapping might be more fitting for a +1 (it won't tell them where you are, or what you are, or what you're up to, but it'll tell them that you're nearby, and you're not mundane)