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
Arcane Heist 2UUSorcery You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
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Zabaz, the Glimmerwasp 1Legendary Artifact Creature — Insect Modular 1 If a modular triggered ability would put one or more +1/+1 counters on a creature you control, that many plus one +1/+1 counters are put on it instead. {R}: Destroy target artifact you control. {W}: Zabaz, the Glimmerwasp gains flying until end of turn. 0/0
Champions of Tyr 2WWCreature — Angel Knight Flying Double team When Champions of Tyr enters the battlefield, you get a one-time boon with "When you cast a creature spell, that creature enters the battlefield with your choice of a +1/+1 counter, a flying counter, or a lifelink counter on it." 4/3
Wingfold Pteron 5UCreature — Dinosaur Wingfold Pteron enters the battlefield with your choice of a flying counter or a hexproof counter on it. (A creature with hexproof can't be the target of spells or abilities your opponents control.) 3/6
Savage Summoning GInstant This spell can't be countered. The next creature spell you cast this turn can be cast as though it had flash. That spell can't be countered. That creature enters the battlefield with an additional +1/+1 counter on it.
Decimator Beetle 3BGCreature — Insect When Decimator Beetle enters the battlefield, put a -1/-1 counter on target creature you control. Whenever Decimator Beetle attacks, remove a -1/-1 counter from target creature you control and put a -1/-1 counter on up to one target creature defending player controls. 4/5
Clockspinning UInstant Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Choose a counter on target permanent or suspended card. Remove that counter from that permanent or card or put another of those counters on it.
Toluz, Clever Conductor W/UUU/BLegendary Creature — Human Rogue When Toluz, Clever Conductor enters the battlefield, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.) Whenever you discard one or more cards, exile them from your graveyard. When Toluz dies, put the cards exiled with it into their owner's hand. 3/1
Keldon Warcaller 1RCreature — Human Warrior Whenever Keldon Warcaller attacks, put a lore counter on target Saga you control. 2/2
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