Assert Authority 30 (Mirrodin) - Foil

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

NM - $5.90
LP - $4.70
MP - $3.50
HP - $2.40
DMG - $1.20