Crixus see's the coin flip and at its landing and with Aquavius's words about the lucky piece Crixus nods as if has made up his mind.
"Luck never really worked for me, when it had to. That said if it works for you then we will use your luck. To Fimbricks it is then."
Crixus will then slam his helmet back on and offers Gribbl a boost up to his old place atop Crixus's should armor.
Once he looks situated Crixus will ask "So uh...which way to this Fimbrick fellows house?"
If you look under his name you see a spoiler section with it hidden. I believe its on the upper left part of his character profile as well.