Render Speechless is a common Sorcery card from Secrets of Strixhaven (SOS), collector number 220. Current market price: $0.08 (foil $0.16), TCGplayer market prices via Scryfall.
Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Put two +1/+1 counters on up to one target creature.