Thief of Existence 174 (Modern Horizons 3)

Devoid (This card has no color.) When you cast this spell, exile up to one target noncreature, nonland permanent an opponent controls with mana value 4 or less. If you do, Thief of Existence gains "When this creature leaves the battlefield, target opponent draws a card."

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