Wretched Throng is a common Creature — Zombie Horror card from Innistrad Remastered (INR), collector number 94. Current market price: $0.08 (foil $0.14), TCGplayer market prices via Scryfall.
When this creature dies, you may search your library for a card named Wretched Throng, reveal it, put it into your hand, then shuffle.