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Assert Authority

First printed in Mirrodin (2003)

Assert Authority

Instant

Affinity for artifacts (This spell costs 1 generic 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.

Illustrated by
Greg Hildebrandt

Assert Authority legality

Prices

Paper price: €0.18 / $0.35 , the cheapest non-foil print (Cardmarket, and TCGplayer, otherwise Mana Pool or Card Kingdom, through MTGJSON, 10 Nov 2026).

MTGO price: 0.003 TIX, the cheapest non-foil print (average sell price on GoatBots, 10 Nov 2026).