Confounding Riddle is a uncommon Instant card from The Lost Caverns of Ixalan (LCI), collector number 50. Current market price: $0.30 (foil $0.30), TCGplayer market prices via Scryfall.
Choose one — • Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard. • Counter target spell unless its controller pays {4}.