Channeled Dragonfire 423 (Promo Pack: Tarkir: Dragonstorm)

Channeled Dragonfire deals 2 damage to any target. Harmonize {5}{R}{R} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by {X}, where X is its power. Then exile this spell.)

NM - $1.50
LP - $1.50
MP - $1.50
HP - $1.50
DMG - $1.50