Assert Authority

Instant, 5UU (7)
Affinity for artifacts (This spell costs {1} less to play for each artifact you control.)
Counter target spell. If that spell is countered this way, remove it from the game instead of putting it into its owner's graveyard.¹
Illus. Greg Hildebrandt

Crystal Keep Rulings Summaries

• Note - Also see Affinity, Rule 502.31.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/7)	Mirrodin (Uncommon)