Rushes reloading raider

I waited until I heard him reloading, then dashed into the room and spun to face him, focusing all my magic... not on my own weapon nor on him, but on the bookshelf behind him. The glow of my horn stood out brighter and brighter as he lifted the reloaded assault rifle and took aim for my head.

CRASH!

The bookshelf came down on top of him, knocking him unconscious. The assault rifle fell to the floor in a rain of dead books. Something else showered down as well, thrown from the falling bookshelf. Knocking away a book that had fallen over it, I saw that it was an ancient, dusty pair of pre-war binoculars. At first, it struck me as extremely odd that someone would need binoculars in a library -- that would require some really bad eyesight -- but the silly thought passed.