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
Timmerian Fiends 1BBCreature — Horror Remove Timmerian Fiends from your deck before playing if you're not playing for ante. {B}{B}{B}, Sacrifice Timmerian Fiends: The owner of target artifact may ante the top card of their library. If that player doesn't, exchange ownership of that artifact and Timmerian Fiends. Put the artifact card into your graveyard and Timmerian Fiends from anywhere into that player's graveyard. This change in ownership is permanent. 1/1
Chalice of the Void XXArtifact Chalice of the Void enters the battlefield with X charge counters on it. Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void, counter that spell.
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Isao, Enlightened Bushi 2GLegendary Creature — Human Samurai This spell can't be countered. Bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.) {2}: Regenerate target Samurai. 2/1
Klement, Life Acolyte 1WWLegendary Creature — Tiefling Cleric Lifelink When this creature specializes, you get a one-time boon with "When you cast a creature spell, that creature enters the battlefield with a lifelink counter on it." 3/3
Invigorating Surge 2GInstant Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on that creature.
Urza's Rebuff 1UUInstant Choose one — • Counter target spell. • Tap up to two target creatures.
Leyline of Lifeforce 2GGEnchantment If Leyline of Lifeforce is in your opening hand, you may begin the game with it on the battlefield. Creature spells can't be countered.
Crystalline Nautilus 2UEnchantment Creature — Nautilus Bestow {3}{U}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) When Crystalline Nautilus becomes the target of a spell or ability, sacrifice it. Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it." 4/4
Star Pupil WCreature — Human Wizard Star Pupil enters the battlefield with a +1/+1 counter on it. When Star Pupil dies, put its counters on target creature you control. 0/0
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