The 500mm MultiBan Cannon is a special Anti-Omni weapon designed by the Executive ROFL corporation of Nation Creation. It is by far the most powerful Ban Cannon in the history of anything, ever. It is known for rapidly banning multiple accounts in quick succcession, and rebanning the same account. It is the only known counter to TOR.
This counter is not proven 100% effective, however. It is only to be used in the event of a ban evasion.