Harmonized Crescendo (ECL 394)

Instant • Mana cost: {4}{U}{U} • Lorwyn Eclipsed • Mythic

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.

Illustrated by konomura.