One of my players is playing a True Beleiver. He has inhuman toughness and this is what he wants as a catch: (+3 discount)
Let's break this down, shall we?
"The Catch is that the toughness only comes into play if I am engaged in conflict with creatures that are affected by my Holy Touch power and I am aware of it,
That sounds like "something specific" to me, so +1.
or was guided to be there by the Guide my Hand power[/i]."
This also sounds like "something specific." However, we can only take the highest bonus, so this is ignored.
Any kind of research would discover this, so it'd be easy to find out and send mortal goons who would bypass the catch.
Since anyone who did some research can find out about your catch, that's worth another +1, for a total of +3.
Is this a fair catch? It's a bit unusual, so I really don't know how to adjudicate it.
Unusual? Maybe. But going by the guidelines for the catch, you properly priced it out.
Because otherwise it functions as a "free" supernatural sense - if toughness is active, hey, that must be some kinda faith-vulnerable supernatural thingy! Who would've guessed?
Now, there's nothing wrong with having such a sensory power; it just shouldn't come for free as a side effect of having a slightly unusual catch.
Another way to go about it is to just give the character Supernatural Sense. In-character justification? The Almighty wants them to know what is an abomination in His eyes.
If not, don't worry about it. The +3 catch covers it all!
-EF