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
Planar Incision 1UInstant Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.
Wild Onslaught 3GInstant Kicker {4} (You may pay an additional {4} as you cast this spell.) Put a +1/+1 counter on each creature you control. If this spell was kicked, put two +1/+1 counters on each creature you control instead.
Vizier of Remedies 1WCreature — Human Cleric If one or more -1/-1 counters would be put on a creature you control, that many -1/-1 counters minus one are put on it instead. 2/1
Test of Talents 1UInstant Counter target instant or sorcery spell. Search its controller's graveyard, hand, and library for any number of cards with the same name as that spell and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.
Mindreaver UUCreature — Human Wizard Heroic — Whenever you cast a spell that targets Mindreaver, exile the top three cards of target player's library. {U}{U}, Sacrifice Mindreaver: Counter target spell with the same name as a card exiled with Mindreaver. 2/1
Repulsive Mutation XGUInstant Put X +1/+1 counters on target creature you control. Then counter up to one target spell unless its controller pays mana equal to the greatest power among creatures you control.
Scorching Lava 1RInstant Kicker {R} (You may pay an additional {R} as you cast this spell.) Scorching Lava deals 2 damage to any target. If this spell was kicked, that creature can't be regenerated this turn and if it would die this turn, exile it instead.
Glyph Keeper 3UUCreature — Sphinx Flying Whenever Glyph Keeper becomes the target of a spell or ability for the first time each turn, counter that spell or ability. Embalm {5}{U}{U} ({5}{U}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Sphinx with no mana cost. Embalm only as a sorcery.) 5/3
Contractual Safeguard 2WInstant Addendum — If you cast this spell during your main phase, put a shield counter on a creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.) Choose a kind of counter on a creature you control. Put a counter of that kind on each other creature you control.
Forbidden Crypt 3BBEnchantment If you would draw a card, return a card from your graveyard to your hand instead. If you can't, you lose the game. If a card would be put into your graveyard from anywhere, exile that card instead.
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