What are the necessarily stats to find a blood stern?

[Manson]

I need one man.
I NEED MY FIX MAN.

[Machenoid]

surely higher then rustroot (20 perception, 20 exploration) if you've found them before, then all you need to do is simply double your perception and possibly your exploration; it should double your chances.

[Manson]

OK THANK YOU MAN.
Going to go get high off the shit now.

[martinuzz]

My perception has recently become high enough to find them..
But.. Erm.. How can I use them, and for what?

[Flocke]

look at this:

http://havenandhearth.wikia.com/wiki/Bandit%27s_Mask