"If it pleases the bard, the game I wish to play is an old one, I think your city invented it: Five finger fillet. if I win then our mysterious guest stays and fifty gold." Viper stretched his left hand, "And if you win, well, let's say you won't."
Before Jack could even think of replying Viper continued, "And do not fret, as I said I would not think about wounding you. Could you imagine what the good sheriff would do to me if you lost your wedding finger?" Viper shuddered while he removed his left hand, placing it on the table.
"We'll use my left hand. The rules are simple, keep going until you stab one of my digits, making poor lefty fly off the table. What do you say?"
((*It will work with a random number generator, between 1-5. If you roll 1,2 or 3 it is safe. 4 is a nick, 5 is a stab. Whoever rolls the most safe numbers win, though a competition between a lunatic and a bard from Bilgewater is bound to be messy*))