Natures Rhythm 150 (Tarkir: Dragonstorm)

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. Harmonize {X}{G}{G}{G}{G} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by an amount of generic mana equal to its power. Then exile this spell.)

NM - $9.10
LP - $7.30
MP - $5.50
HP - $3.70
DMG - $1.90