Nature's Rhythm 150/291 (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 - $10.20
LP - $8.10
MP - $6.10
HP - $4.10
DMG - $2.10