Assert Authority is a uncommon Instant card from Magic: The Gathering (Mirrodin, MRD). Current market price: $0.24.
Uncommon
Mirrodin (MRD)
{5}{U}{U}
Mana Value
7
Colors
U
Card Text
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.
