It's a documented racial advantage for Lizards: http://planets.nu/#/howtoplay/damage-details (in particular, look at the tables)
A rule of thumb for the Lizard Crew Bonus is that it "reduces the current damage level" by 50%, to a minimum of 0%, though that's not 100% correct.
And yes, it's a bit confusing that it's not mentioned in this page: http://planets.nu/#/howtoplay/adv-lizard-crew-bonus
I'll send a note to the documentation editors. |