Assert Authority is a Magic: The Gathering card. Compare listings from Singapore Magic: The Gathering sellers on CardJio, then jio them on WhatsApp.
Mana cost
{5}{U}{U}
Mana value
7
Type
Instant
Color
Blue
Color identity
Blue
Keywords
Affinity
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.