Mr. Spock : Difficult to be precise, Captain. I should say, approximately 7,824.7 to 1. (quote from ST:TOS "Errand of Mercy")

 

This isn't that bad, but irilyth's only chance of winning is to lose his poison (but not his (4)), yet capture all my dice. This is pretty unlikely to happen no matter what attack he makes here, but what attack would give him his best chance of success?