I'm assuming the if this were to happen, Bruce Wayne would probably sell his entire empire in order to have the resources to build an "Iron Man" style suit, made out of a material that Magneto can't shred to pieces.
The suit would be specially customized to be able to absorb most if not all energy that is thrown into his direction but not directly at him.
He'd play in the cut moments before most of the universe(starting at Earth) would be disintegrated by the battle. As a result, he'd end up being one of the most powerful opponents near the end of the battle after the suit absorbs all of the misdirected energy and power.
I hate Batman. But if he's in this battle, this is how he'd do it. That or hitch a ride on an opponent who can move between dimensions and somehow stay & hid mid dimension while the fight is going on and come out near the end & dismantle the last remaining opponents.
The suit would be specially customized to be able to absorb most if not all energy that is thrown into his direction but not directly at him.
He'd play in the cut moments before most of the universe(starting at Earth) would be disintegrated by the battle. As a result, he'd end up being one of the most powerful opponents near the end of the battle after the suit absorbs all of the misdirected energy and power.
I hate Batman. But if he's in this battle, this is how he'd do it. That or hitch a ride on an opponent who can move between dimensions and somehow stay & hid mid dimension while the fight is going on and come out near the end & dismantle the last remaining opponents.