Raid Shadow Legends – Defence Auras boost your entire team’s Defence in the area that their Aura relates to but only if you put this champion in the leader position. Defence will improve the survivability of all of your champions and improve the damage of the champions that have skills that scale off of Defence. The only Aura that will work against Clan Boss is an All Battles Aura. Aura’s are generally stronger on Legendary Champions and weakest on Rare Champions however this is not always the case!
You retain this additional Aura bonus even if your leader dies.