(In response to someone else's VM thread)
Flying units in a Lizardman race may seem difficult, but you can probably come up with some solid stuff if you 'broaden your horizons'. First question: what environment/world/setting do the Lizardmen hail from? Because, like the Night Elves (and my Trolls) you can flesh out the faction with creatures that are aligned with them. If it's a jungle/swamp world, you got bats & tropical birds, pteradons & pterodactyls, giant insects... If it's a desert/forest world... well, much the same. Add in big condor/vulture-type birds, sand drakes, giant insects again... Etc.