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
Aven Interrupter 1WWCreature — Bird Rogue Flash Flying When Aven Interrupter enters the battlefield, exile target spell. It becomes plotted. (Its owner may cast it as a sorcery on a later turn without paying its mana cost.) Spells your opponents cast from graveyards or from exile cost {2} more to cast. 2/2
Reality Smasher 4CCreature — Eldrazi ({C} represents colorless mana.) Trample, haste Whenever Reality Smasher becomes the target of a spell an opponent controls, counter that spell unless its controller discards a card. 5/5
Dismantle 2RSorcery Destroy target artifact. If that artifact had counters on it, put that many +1/+1 counters or charge counters on an artifact you control.
Flavor Judge 1WCreature — Bird Advisor {T}: Choose target spell or ability that targets a permanent you control. Then ask a person outside the game if the story of what will happen makes sense. If they say no, sacrifice Flavor Judge and counter that spell or ability. 2/2
Hornswoggle 2UInstant Counter target creature spell. You create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
Amulet of Safekeeping 2Artifact Whenever you become the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}. Creature tokens get -1/-0.
Hex, Kellan's Companion 1GLegendary Creature — Dog Haste Whenever you cast an Adventure spell, if Hex, Kellan's Companion is on the battlefield or in exile, it perpetually gets +1/+1. Then if it's on the battlefield, exile it with a fetch counter on it. Whenever you cast a spell from exile, if Hex is in exile with a fetch counter on it, put it onto the battlefield. 1/1
Soldevi Excavations Land If Soldevi Excavations would enter the battlefield, sacrifice an untapped Island instead. If you do, put Soldevi Excavations onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add {C}{U}. {1}, {T}: Scry 1.
Bomb Squad 3RCreature — Dwarf {T}: Put a fuse counter on target creature. At the beginning of your upkeep, put a fuse counter on each creature with a fuse counter on it. Whenever a creature has four or more fuse counters on it, remove all fuse counters from it and destroy it. That creature deals 4 damage to its controller. 1/1
Bounty Hunter 2BBCreature — Human Archer Minion {T}: Put a bounty counter on target nonblack creature. {T}: Destroy target creature with a bounty counter on it. 2/2
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