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
Eye of Doom 4Artifact When Eye of Doom enters the battlefield, each player chooses a nonland permanent and puts a doom counter on it. {2}, {T}, Sacrifice Eye of Doom: Destroy each permanent with a doom counter on it.
Renegade Krasis 1GGCreature — Beast Mutant Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever Renegade Krasis evolves, put a +1/+1 counter on each other creature you control with a +1/+1 counter on it. 3/2
Abolish 1WWInstant You may discard a Plains card rather than pay this spell's mana cost. Destroy target artifact or enchantment.
Regenerations Restored WUEnchantment Vanishing 12 (This enchantment enters the battlefield with twelve time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) Whenever one or more time counters are removed from Regenerations Restored, scry 1 and you gain 1 life. Then if Regenerations Restored has no time counters on it, exile it. When you do, take an extra turn after this one.
Fountain of Cho Land Fountain of Cho enters the battlefield tapped. {T}: Put a storage counter on Fountain of Cho. {T}, Remove any number of storage counters from Fountain of Cho: Add {W} for each storage counter removed this way.
Mercadian Bazaar Land Mercadian Bazaar enters the battlefield tapped. {T}: Put a storage counter on Mercadian Bazaar. {T}, Remove any number of storage counters from Mercadian Bazaar: Add {R} for each storage counter removed this way.
Rushwood Grove Land Rushwood Grove enters the battlefield tapped. {T}: Put a storage counter on Rushwood Grove. {T}, Remove any number of storage counters from Rushwood Grove: Add {G} for each storage counter removed this way.
Saprazzan Cove Land Saprazzan Cove enters the battlefield tapped. {T}: Put a storage counter on Saprazzan Cove. {T}, Remove any number of storage counters from Saprazzan Cove: Add {U} for each storage counter removed this way.
Subterranean Hangar Land Subterranean Hangar enters the battlefield tapped. {T}: Put a storage counter on Subterranean Hangar. {T}, Remove any number of storage counters from Subterranean Hangar: Add {B} for each storage counter removed this way.
Shorecrasher Elemental UUUCreature — Elemental {U}: Exile Shorecrasher Elemental, then return it to the battlefield face down under its owner's control. {1}: Shorecrasher Elemental gets +1/-1 or -1/+1 until end of turn. Megamorph {4}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) 3/3
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