Card Codex

M:tG card similarity search

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
Invoke Calamity 1RRRRInstant You may cast up to two instant and/or sorcery spells with total mana value 6 or less from your graveyard and/or hand without paying their mana costs. If those spells would be put into your graveyard, exile them instead. Exile Invoke Calamity.
Instill Infection 3BInstant Put a -1/-1 counter on target creature. Draw a card.
Natural Obsolescence 1GInstant Put target artifact on the bottom of its owner's library.
Ashiok's Erasure 2UUEnchantment Flash When Ashiok's Erasure enters the battlefield, exile target spell. Your opponents can't cast spells with the same name as the exiled card. When Ashiok's Erasure leaves the battlefield, return the exiled card to its owner's hand.
Order of the Sacred Torch 1WWCreature — Human Knight {T}, Pay 1 life: Counter target black spell. 2/2
Thought Distortion 4BBSorcery This spell can't be countered. Target opponent reveals their hand. Exile all noncreature, nonland cards from that player's hand and graveyard.
Anafenza, the Foremost WBGLegendary Creature — Human Soldier Whenever Anafenza, the Foremost attacks, put a +1/+1 counter on another target tapped creature you control. If a nontoken creature an opponent owns would die or a creature card not on the battlefield would be put into an opponent's graveyard, exile that card instead. 4/4
Pako, Arcane Retriever 3RGLegendary Creature — Elemental Dog Partner with Haldan, Avid Arcanist Haste Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way. 3/3
Unsettled Mariner WUCreature — Shapeshifter Changeling (This card is every creature type.) Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}. 2/2
Ruinous Intrusion 3GInstant Exile target artifact or enchantment. Put X +1/+1 counters on target creature you control, where X is the mana value of the permanent exiled this way.
Page 45