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
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Goldbug, Scrappy Scout Legendary Artifact — Vehicle Living metal (As long as it's your turn, this Vehicle is also a creature.) Human spells you control can't be countered. Whenever Goldbug and at least one Human attack, draw a card and convert Goldbug. 1/3
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Bubble Smuggler 1UCreature — Octopus Fish Disguise {5}{U} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) As Bubble Smuggler is turned face up, put four +1/+1 counters on it. 2/1
Ichor Synthesizer 1UCreature — Phyrexian Wizard Whenever you cast a noncreature spell, put an oil counter on Ichor Synthesizer. As long as Ichor Synthesizer has four or more oil counters on it, it gets +2/+0 and can't be blocked. 1/3
Can't Stay Away WBSorcery Return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains "If this creature would die, exile it instead." Flashback {3}{W}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Woolly Razorback 2WWCreature — Boar Beast Woolly Razorback enters the battlefield with three ice counters on it. As long as Woolly Razorback has an ice counter on it, prevent all combat damage it would deal and it has defender. Whenever Woolly Razorback blocks, remove an ice counter from it. 7/7
Valakut Exploration 2REnchantment Landfall — Whenever a land enters the battlefield under your control, exile the top card of your library. You may play that card for as long as it remains exiled. At the beginning of your end step, if there are cards exiled with Valakut Exploration, put them into their owner's graveyard, then Valakut Exploration deals that much damage to each opponent.
Treizeci, Sun of Serra 3WLegendary Creature — Human Knight Companion — Your starting deck contains only nostalgic cards. (Retro frames, legends, and artifacts are nostalgic.) Vigilance Whenever you cast a nostalgic spell, you may pay {2}. If you do, put a +1/+1 counter on Treizeci, then for each +1/+1 counter on it, create a Serra Angel token. 3/3
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