Get a Free 3-6 Star Baron Zemo this Week!
Log in to the Summoner's Market at https://store.playcontestofchampions.com/ and claim the Baron Zemo Selector between 10am PT November 24 and 10am PT on December 1st.
Proven and Below: 3-Star
Conqueror/Uncollected: 4-Star
Cavalier/Thronebreaker: 5-Star
Paragon/Valiant: 6-Star
You can only claim this Baron Zemo one time. The Baron Zemo is delivered as a selector, claiming it will require you to choose your rarity immediately. If you plan to change your Progression level during the Cyber Week event, we suggest you wait until you have made that change before claiming this selector.
Log in to the Summoner's Market at https://store.playcontestofchampions.com/ and claim the Baron Zemo Selector between 10am PT November 24 and 10am PT on December 1st.
Proven and Below: 3-Star
Conqueror/Uncollected: 4-Star
Cavalier/Thronebreaker: 5-Star
Paragon/Valiant: 6-Star
You can only claim this Baron Zemo one time. The Baron Zemo is delivered as a selector, claiming it will require you to choose your rarity immediately. If you plan to change your Progression level during the Cyber Week event, we suggest you wait until you have made that change before claiming this selector.
Brackets explanation

Hey guys, may someone explain to me about the arena and event REWARD brackets? I've been playing for a while but I've always wondered about these. Thanks.
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Comments
New summoners (less than 60 days since they started playing the game) get grouped together to compete in arenas.
They compete for the same rewards (basic champion) in arena. It's just that a summoner in the beginner or intermediate bracket will most likely not need to score as much as a summoner in the experienced bracket to get the same reward.