Ok to start off I'm not a Tau player, but my friend is. He apparently learned some new things that he didnt notice before and I wanna make sure he's right. He says first of all that crisis suits cant be killed automatically because of the strength is double the toughness rule. Is this true? I also want to question whether I need to roll to see stealth suits when firing with an indirect firing weapon such as a basilisk. Lastly he says he can take both shield generator and drone controller. The question following that is a drone will sacrifice itself for the controller, but what if they have different saves(the crisis has a 4+inv the drone has 4+) can the drone still sacrifice itself if the crisis fails its ivulnerable save? All help will be appreciated.