okay i dont see any information on this in the AB, but do the units in the army get some sort of buff for taking a plane jane BsB??? ie no magic banner. I kow with VC you get to ignore a wound from combat rez if you are with in 12".
As it does with VC if you didn't know. The re-roll to break tests doesn't limit only to lizardmen, but all armies that have to take break tests can use their BsB to re-roll any failed break tests. Armies that don't test for breaking have their specific BsB rules stated at their own armybook.