By recreating some of the famous managerial moves and objectives, you’ll get the chance to win valuable rewards. The masterminds who make the right decisions at the right time and who manage to recreate every objective of each chapter in one match, will get the Master Reward. 
Every chapter of victorious history holds a unique Master Reward that can only be claimed once.
Keep in mind that the reward mechanic is the same as for the regular rewards, meaning that all Master Rewards that are not claimed will be lost at the end of the event.