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
Homarid 2UCreature — Homarid Homarid enters the battlefield with a tide counter on it. At the beginning of your upkeep, put a tide counter on Homarid. As long as there is exactly one tide counter on Homarid, it gets -1/-1. As long as there are exactly three tide counters on Homarid, it gets +1/+1. Whenever there are four or more tide counters on Homarid, remove all tide counters from it. 2/2
Sensei Golden-Tail 1WLegendary Creature — Fox Samurai Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.) {1}{W}, {T}: Put a training counter on target creature. That creature gains bushido 1 and becomes a Samurai in addition to its other creature types. Activate only as a sorcery. 2/1
The Magic Mirror 6UUULegendary Artifact This spell costs {1} less to cast for each instant and sorcery card in your graveyard. You have no maximum hand size. At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.
Thassa's Intervention XUUInstant Choose one — • Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random order. • Counter target spell unless its controller pays twice {X}.
Phoenix of Ash 1RRCreature — Phoenix Flying, haste {2}{R}: Phoenix of Ash gets +2/+0 until end of turn. Escape—{2}{R}{R}, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.) Phoenix of Ash escapes with a +1/+1 counter on it. 2/2
Exhilarating Elocution 2WBSorcery Put two +1/+1 counters on target creature you control. Other creatures you control get +1/+1 until end of turn.
Devoted Caretaker WCreature — Human Cleric {W}, {T}: Target permanent you control gains protection from instant spells and from sorcery spells until end of turn. 1/2
Dragonspark Reactor 1RArtifact Whenever Dragonspark Reactor or another artifact enters the battlefield under your control, put a charge counter on Dragonspark Reactor. {4}, Sacrifice Dragonspark Reactor: It deals damage equal to the number of charge counters on it to target player and that much damage to up to one target creature.
Hunting Drake 4UCreature — Drake Flying When Hunting Drake enters the battlefield, put target red or green creature on top of its owner's library. 2/2
A Good Thing 4WBEnchantment Spells and abilities you control can't destroy, exile, target, or cause you to sacrifice A Good Thing. At the beginning of your upkeep, double your life total. Then, if you have 1,000 or more life, you lose the game.
Page 225