Madame Serris is a Void affinity epic from the Dark Elves faction. She was introduced during Halloween 2019 and remains one of the best champions in the game.
Many end game players rate her as THE BEST arena champion in the entire game! Madame Serris has a signature A3 ability that removes all buffs from all enemies and replaces them with a decrease attack and decrease defence debuff. Madame is generally used to go 2nd in an arena team to set up your damage dealer to destroy the enemy team in 1 shot!
In order to make the most from your Madame you need to build her fast and high accuracy. high HP also helps with her shield passive ability.
Outside of the arena Madame is also strong due to the same abilities in ALL content in Raid: Shadow Legends.
Must build champion on your roster and one of the few champions I would recommend to build dupes of for 3v3 Arena!