Throes of Chaos is a uncommon Sorcery card from Doctor Who (WHO), collector number 227. Current market price: $0.26 (foil $1.47), TCGplayer market prices via Scryfall.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)