Harmonized Crescendo is a rare Instant card from Lorwyn Eclipsed (ECL), collector number 357. Current market price: $1.52 (foil $2.05), TCGplayer market prices via Scryfall.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Choose a creature type. Draw a card for each permanent you control of that type.