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
North Star 4Artifact {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)
Skittering Cicada 3Creature — Insect Flash You may cast colorless spells as though they had flash. Whenever you cast a colorless spell, until end of turn, Skittering Cicada gains trample and gets +X/+X, where X is that spell's mana value. 2/2
Sai, Master Thopterist 2ULegendary Creature — Human Artificer Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying. {1}{U}, Sacrifice two artifacts: Draw a card. 1/4
Metrognome 4Artifact When a spell or ability an opponent controls causes you to discard Metrognome, create four 1/1 colorless Gnome artifact creature tokens. {4}, {T}: Create a 1/1 colorless Gnome artifact creature token.
Equilibrium 1UUEnchantment Whenever you cast a creature spell, you may pay {1}. If you do, return target creature to its owner's hand.
Temporal Machinations 2USorcery Return target creature to its owner's hand. If you control an artifact, draw a card.
Aretopolis Plane — Kephalai When you planeswalk to Aretopolis or at the beginning of your upkeep, put a scroll counter on Aretopolis, then you gain life equal to the number of scroll counters on it. When Aretopolis has ten or more scroll counters on it, planeswalk. Whenever chaos ensues, put a scroll counter on Aretopolis, then draw cards equal to the number of scroll counters on it.
Deicide 1WInstant Exile target enchantment. If the exiled card is a God card, search its controller's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles.
Redemptor Dreadnought 5Artifact Creature — Astartes Dreadnought Fallen Warrior — As an additional cost to cast this spell, you may exile a creature card from your graveyard. Trample Plasma Incinerator — Whenever Redemptor Dreadnought attacks, if a card is exiled with it, it gets +X/+X until end of turn, where X is the power of the exiled card. 4/4
Opal Titan 2WWEnchantment When an opponent casts a creature spell, if Opal Titan is an enchantment, Opal Titan becomes a 4/4 Giant creature with protection from each of that spell's colors.
Page 216