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
Case of the Shifting Visage 1UUEnchantment — Case At the beginning of your upkeep, surveil 1. To solve — There are fifteen or more cards in your graveyard. (If unsolved, solve at the beginning of your end step.) Solved — Whenever you cast a nonlegendary creature spell, copy that spell. (The copy becomes a token.)
Sadistic Obsession 3BEnchantment — Aura Enchant creature Enchanted creature has "{B}, {T}: Put a -1/-1 counter on target creature."
Ashiok, Wicked Manipulator 3BBLegendary Planeswalker — Ashiok If you would pay life while your library has at least that many cards in it, exile that many cards from the top of your library instead. [+1]: Look at the top two cards of your library. Exile one of them and put the other into your hand. [−2]: Create two 1/1 black Nightmare creature tokens with "At the beginning of combat on your turn, if a card was put into exile this turn, put a +1/+1 counter on this creature." [−7]: Target player exiles the top X cards of their library, where X is the total mana value of cards you own in exile. Loyalty 5
Bloomwielder Dryads Creature — Dryad Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) At the beginning of your end step, put a +1/+1 counter on target creature you control. 3/3
Crash 2RInstant You may sacrifice a Mountain rather than pay this spell's mana cost. Destroy target artifact.
Spontaneous Flight 2WInstant Target creature gets +2/+2 until end of turn. Put a flying counter on it.
Angelfire Ignition 1RWSorcery Put two +1/+1 counters on target creature. It gains vigilance, trample, lifelink, indestructible, and haste until end of turn. Flashback {2}{R}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Mizzix of the Izmagnus 2URLegendary Creature — Goblin Wizard Whenever you cast an instant or sorcery spell with mana value greater than the number of experience counters you have, you get an experience counter. Instant and sorcery spells you cast cost {1} less to cast for each experience counter you have. 2/2
Invasion of New Capenna WBBattle — Siege (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of New Capenna enters the battlefield, you may sacrifice an artifact or creature. When you do, exile target artifact or creature an opponent controls.
Sewerdreg 3BBCreature — Spirit Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Sacrifice Sewerdreg: Exile target card from a graveyard. 3/3
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