Sudden Storm is a common Instant card from Born of the Gods (BNG), collector number 53. Current market price: $0.14 (foil $0.09), TCGplayer market prices via Scryfall.
Tap up to two target creatures. Those creatures don't untap during their controllers' next untap steps. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)