[@Lunarlors34]

You're probably right, which is why I said "Unsanctioned". Once you have permission, then you can beat on him! 

Ninja Edit: I know, it's just a generalization on Malakaus's part. To him collateral damage is essentially anything that alters the landscape, be it destroyed buildings or temporary arenas. He's mostly annoyed by such things since some mages (read: All the ones Malakaus had met so far) don't clean up after themselves forcing him or whoever is nearby to deal with the mess. Usually because he killed the mages, so they aren't really in any position to fix it in the end.