Grim Bauble is a common Artifact card from Aetherdrift (DFT), collector number 88. Current market price: $0.25 (foil $0.26), TCGplayer market prices via Scryfall.
When this artifact enters, target creature an opponent controls gets -2/-2 until end of turn. {2}{B}, {T}, Sacrifice this artifact: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)