Notorious Throng is a rare Kindred Sorcery — Rogue card from Morningtide (MOR), collector number 45. Current market price: $7.70 (foil $77.92), TCGplayer market prices via Scryfall.
Prowl {5}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Create X 1/1 black Faerie Rogue creature tokens with flying, where X is the damage dealt to your opponents this turn. If this spell's prowl cost was paid, take an extra turn after this one.