Assert Authority - Mirrodin

Assert Authority
Instant

Affinity for artifacts (This spell costs 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.

Legalities

  • NOTLEGAL Standard
  • NOTLEGAL Pioneer
  • LEGAL Modern
  • LEGAL Legacy
  • LEGAL Vintage
  • LEGAL Commander
  • LEGAL Oathbreaker
  • NOTLEGAL Alchemy
  • NOTLEGAL Explorer
  • NOTLEGAL Historic
  • NOTLEGAL Brawl
  • NOTLEGAL Timeless
  • NOTLEGAL Pauper
  • LEGAL Penny