Seems a bit complex.

Normally if you have more than 2 people you'd see who draw the short straw.

Originally Posted by Kalrakh
The only times we had to use it, was, when we needed to gain opposite traits.
I did that - but never cared the outcome - only if the correct trait was picked up. Player A says "I'll have +1 crafting", player B says "I'll have immunity to fear". You never care if player A or B wins - only they get the traits you want.