Card Codex

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17 May 2024: Card library updated.

Assert Authority

5UU · Instant

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.

Similar cards

Color identity:
NameManaTypeText
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Frilled Mystic GGUUCreature — Elf Lizard Wizard Flash When Frilled Mystic enters the battlefield, you may counter target spell. 3/2
Yawgmoth's Agenda 3BBEnchantment You can't cast more than one spell each turn. You may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere, exile it instead.
Spiketail Drake 3UUCreature — Drake Flying Sacrifice Spiketail Drake: Counter target spell unless its controller pays {3}. 3/3
Spiketail Drakeling 1UUCreature — Drake Flying Sacrifice Spiketail Drakeling: Counter target spell unless its controller pays {2}. 2/2
Spiketail Hatchling 1UCreature — Drake Flying (This creature can't be blocked except by creatures with flying or reach.) Sacrifice Spiketail Hatchling: Counter target spell unless its controller pays {1}. 1/1
Reasonable Doubt 1UInstant Counter target spell unless its controller pays {2}. Suspect up to one target creature. (A suspected creature has menace and can't block.)
Reject Imperfection 1UUInstant Counter target spell. If that spell's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
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