Reckoner Shakedown is a common Sorcery card from Kamigawa: Neon Dynasty (NEO), collector number 119. Current market price: $0.13 (foil $0.22), TCGplayer market prices via Scryfall.
Target opponent reveals their hand. You may choose a nonland card from it. If you do, that player discards that card. If you don't, put two +1/+1 counters on a creature or Vehicle you control.