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 - $1.90
LP - $1.50
MP - $1.10
HP - $0.80
DMG - $0.70