After Beyonder Doom prunes Kang + the MCU along with other universes in the multiverse, he collects them and combines with other pruned universes, creating the "Battleworld." Beyonder Doom's ultimate goal is to create and rule over his own version of the Multiverse/Sacred Timeline without the threat of his variants. So he will use the Void/Battleworld as a arena for them to fight. However, the Avengers, and the majority of the other heroes & villains of the multiverse aren't backing down without a fight...
