Raid Shadow Legends – Critical Rate boosts your entire team’s Critical Rate (Critical Chance) in the area that their Aura relates to but only if you put this champion in the leader position. Critical Rate is required for any champion to apply their hardest hits onto your enemies. 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.