When you announce a significantly dangerous ability a potential foe is rumored to have, roll + WIS:
- On 10+, that rumor is probably true; should you ever find that it is, your foreknowledge lets you take +1 when acting in response. Meanwhile, right now the GM will tell you a weakness that foe also has; you take +1 acting on that knowledge, too.
- On 7-9, that rumor is probably correct, but your foreknowledge will let you take +1 if you ever have to act in response.
- On 6-, who knows how reliable that rumor is? Moreover, right now the GM will reveal an unwelcome truth as well as any other action.