Dilapidated Sanitometer

Whenever one or more cards leave your library, you may pay {1}. If you do, each opponent puts that many cards from the top
of their library into their graveyard.
"It doesn't measure time yet it ticks and ticks.
And it is ticking faster. What does it measure?
Why does it tick? If only it would just STOP!
-Diary of Joum the Chronomancer, final entry