Tolarian Contempt is a uncommon Enchantment card from March of the Machine: The Aftermath (MAT), collector number 8. Current market price: $0.24 (foil $0.26), TCGplayer market prices via Scryfall.
When this enchantment enters, put a rejection counter on each creature your opponents control. At the beginning of your end step, for each opponent, choose up to one target creature they control with a rejection counter on it. That creature's owner puts it on their choice of the top or bottom of their library.