Call Forth the Tempest is a rare Sorcery card from Tales of Middle-earth Commander (LTC), collector number 553. Current market price: — (foil $53.09), TCGplayer market prices via Scryfall.
Cascade, 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 of your library in a random order. Then do it again.) Call Forth the Tempest deals damage to each creature your opponents control equal to the total mana value of other spells you've cast this turn.