Caustic Exhale - Tarkir: Dragonstorm - 74

Instant

Mana Cost: {B}

As an additional cost to cast this spell, behold a Dragon or pay {1}. (To behold a Dragon, choose a Dragon you control or reveal a Dragon card from your hand.)
Target creature gets -3/-3 until end of turn.

Common · Tarkir: Dragonstorm · #74 (TDM)

Illustrated by Camille Alquier